Parallel Resistor Network Apparatus

Quick Answer: The Parallel Resistor Network Apparatus is a physics teaching aid with resistors connected side by side between two common points, used to measure branch currents and to show that the equivalent resistance of a parallel network is smaller than any single resistor in it.

Measuring a Parallel Network

In a parallel network every resistor is connected across the same two points, so each branch has the same potential difference. The current divides: more flows through the smaller resistance and less through the larger, and the branch currents add up to the total current drawn from the supply. By moving an ammeter from branch to branch and placing a voltmeter across the network, students confirm both statements from their own readings.

The result that surprises most classes is that adding another resistor in parallel lowers the total resistance. The reciprocal rule, 1/R = 1/R1 + 1/R2 + and so on, explains it: each extra branch is another path for current. Students check it by measuring the total current and voltage, calculating R = V/I and comparing the answer with the calculated value. Two equal resistors in parallel give half the value of either one.

Apparatus of this type usually mounts the resistors on a base with terminals or sockets so that branches can be added or removed; the resistor values, number of branches and connection type of this unit should be confirmed. Used with its companion, the Series Resistor Network Apparatus, it lets a class compare both arrangements in one lesson.

Practical Work

Verifying that branch currents add up to the total current
Showing that every branch has the same potential difference
Calculating equivalent resistance and comparing it with R = V/I
Explaining why household circuits are wired in parallel

Specifications

Item	Parallel resistor network teaching apparatus
Arrangement	Resistors connected in parallel between two common points
Rule shown	1/R = 1/R1 + 1/R2 + … for the equivalent resistance
Measurements	Branch currents, total current and common potential difference
Used with	Low-voltage DC supply, ammeter, voltmeter and leads
Resistor values and connection type	Confirm at enquiry

Care & Handling

Use a low-voltage DC supply and switch off between readings so the resistors do not heat up.
Connect an ammeter in series with a branch, never directly across the supply.
Make sure terminals are tight, because a loose lead changes the readings.
Store the apparatus flat in a dry cupboard.

Why Choose LabEquip

Physics teachers choose ready-made apparatus because it removes the loose-wiring errors that spoil many parallel-circuit practicals. LabEquip lists it in the STEM kits range, with meters and related items in the electrical and electronics section. Send your requirements through the contact page.

Frequently Asked Questions

Why is the total resistance lower when resistors are in parallel?

Each resistor adds another path for current, so more current flows for the same voltage. More current at the same voltage means a lower resistance, which the reciprocal rule describes.

How do I calculate the equivalent resistance of a parallel network?

Add the reciprocals of the individual resistances and take the reciprocal of the sum. For two resistors this simplifies to their product divided by their sum.

Where should the ammeter go in a parallel circuit?

In series with the branch you want to measure, or in the main lead for the total current. Never connect an ammeter directly across the supply or across a resistor.

Is the voltage the same across every branch?

Yes. All branches connect to the same two points, so each has the same potential difference, and a voltmeter across any branch gives the same reading.

Why do my branch currents not add up exactly to the total?

Small differences come from meter accuracy, contact resistance at terminals and resistors warming up. Tighten the connections, take readings quickly and keep the meter on the same range.

How are parallel circuits used in real life?

Household sockets and lights are wired in parallel, so each receives the full supply voltage and can be switched on or off without affecting the others.

Last Updated: September 2026

Laser Optics Experiment Tank Kit

Quick Answer: The Laser Optics Experiment Tank Kit is a transparent tank used with a laser beam so students can see light travelling through water and watch reflection, refraction and total internal reflection happen. It belongs with the optics experiment kits for schools that turn ray diagrams into something visible.

Making the Beam Visible

A laser beam in clean air or clear water is almost invisible from the side, because nothing scatters its light towards the viewer. The laser optics experiment tank solves that: the water is made faintly cloudy with a few drops of milk or a pinch of fluorescent dye, and the beam appears as a bright line. Chalk dust or a fine water mist above the surface shows the beam in the air as well, so students can watch the ray bend where it crosses the water surface.

With the beam visible, the core experiments follow. Aim the beam down into the water at an angle and measure how it bends towards the normal (refraction). Aim it up from below the surface and increase the angle until the beam no longer leaves the water but reflects back inside: total internal reflection, the principle of optical fibres. A small mirror placed in the tank adds reflection under water.

The critical angle for water is about 49 degrees, and students can measure it and compare it with the value calculated from the refractive index of water, about 1.33. The laser type and power class, the tank size and any accessories supplied with this kit should be confirmed, and the school’s laser safety rules applied.

Specifications

Item	Transparent tank kit for laser optics experiments
Medium	Water, lightly clouded so the beam shows
Phenomena shown	Reflection, refraction and total internal reflection
Reference values for water	Refractive index about 1.33; critical angle about 49 degrees
Level	Secondary school and introductory college optics
Laser class, tank size and accessories	Confirm at enquiry

Care & Handling

Never look into the laser or point it at anyone; keep the beam below eye level and stop it with a card on the far side of the tank.
Remove watches and rings, and keep shiny tools out of the beam path to avoid stray reflections.
Mop up spills straight away and keep the laser and any mains-powered equipment away from the water.
Empty, rinse and dry the tank after use so no film or algae forms on the walls.

Experiments

Measuring angles of incidence and refraction to calculate the refractive index of water
Finding the critical angle and demonstrating total internal reflection
Modelling an optical fibre with a beam trapped by repeated reflection
Showing why a straw looks bent in a glass of water

Why Choose LabEquip

Physics departments buy the tank kit because it lets a whole class watch refraction and total internal reflection instead of reading about them. LabEquip lists it in the STEM kits range, and it complements the apparatus in the light and optics section. Ask about quantities on the contact page.

Frequently Asked Questions

Why add milk or dye to the water?

Tiny particles in faintly cloudy water scatter some of the laser light sideways, so the beam becomes visible from the side. Too much makes the water opaque, so add a few drops at a time.

How do students show total internal reflection?

Direct the beam upward from inside the water towards the surface and increase its angle from the normal. Beyond the critical angle, about 49 degrees for water, the beam reflects back into the water instead of leaving it.

What kind of laser is used for school experiments?

Schools normally use low-power visible lasers, typically class 2, under their laser safety rules. Confirm the class of any laser supplied with this kit before the first lesson.

How is the refractive index of water calculated?

Measure the angle of incidence in air and the angle of refraction in water, then divide the sine of the first by the sine of the second. The result should be close to 1.33.

Why does the beam bend at the water surface?

Light travels more slowly in water than in air. When the beam crosses the surface at an angle, the change of speed changes its direction.

How should the tank be cleaned?

Empty it after each session, rinse with clean water, wipe with a soft cloth and let it dry. Avoid abrasive pads, which scratch the walls and scatter the beam.

Last Updated: September 2026

Curved Mirror Fun Model

Quick Answer: The Curved Mirror Fun Model is an optics demonstration mirror with a curved reflecting surface that stretches, squashes or flips a viewer’s reflection like a funfair mirror. It is used to show how concave and convex curvature changes the size and shape of an image.

Why Your Reflection Changes Shape

A flat mirror reflects every part of your face at the same angle, so the image is the same size and the right shape. Curve the mirror and that changes. Where the surface bulges outward (convex), reflected rays spread apart and the image looks smaller; where it curves inward (concave) and you stand close, the image looks larger. A fun mirror combines curvatures, so parts of the reflection grow and others shrink, producing tall-and-thin or short-and-wide versions of the viewer.

Standing further back from a concave region shows the next surprise: beyond the focal point the image flips upside down. Moving slowly towards and away from the mirror lets students find the distance at which the image turns over, a direct experience of the focal point long before they meet ray diagrams.

The model connects a fairground novelty with everyday devices. Convex mirrors are used as vehicle wing mirrors and road-junction safety mirrors because they give a wide field of view; concave mirrors appear in make-up and shaving mirrors, torch reflectors and solar cookers. Whether this model has one curvature, several or a flexible surface should be confirmed.

Demonstrations

Exploring magnified, diminished and inverted images by walking towards the mirror
Locating the approximate focal point of a concave region
Linking to wing mirrors, safety mirrors and torch reflectors
Open-day or science-fair exhibit that invites visitors to experiment

Specifications

Item	Curved-mirror optics demonstration model
Principle	Curved reflecting surfaces change image size and shape
Convex effect	Smaller, upright image with a wide view
Concave effect	Magnified close up; inverted beyond the focal point
Settings	Classrooms, science centres and open days
Curvature layout, size and mirror material	Confirm at enquiry

Care & Handling

Clean with a soft, lint-free cloth; many display mirrors have a plastic reflective face that scratches easily.
Never use abrasive or solvent cleaners on the reflecting surface.
Keep the mirror out of direct sunlight, because a concave surface can focus sunlight into a hot spot.
Mount or stand the mirror securely so it cannot tip over.

Why Choose LabEquip

Schools and science centres buy the Curved Mirror Fun Model for an optics demonstration that visitors of any age grasp at a glance. LabEquip lists it in the STEM kits range; for beam-level optics see the Laser Optics Experiment Tank Kit. Send enquiries through the contact page.

Frequently Asked Questions

Why does a curved mirror make me look taller or shorter?

Different parts of the curved surface reflect light at different angles, so some parts of the image are magnified and others shrunk. Curvature running up and down stretches or squashes you vertically.

What is the difference between a concave and a convex mirror?

A concave mirror curves inward like the inside of a spoon and can magnify or invert images. A convex mirror bulges outward like the back of a spoon and always gives a smaller, upright image with a wide view.

Why does the image turn upside down when I step back?

Beyond the focal point of a concave mirror the reflected rays cross before reaching your eye, so the image is inverted. Inside the focal point the image is upright and magnified.

Where are curved mirrors used in real life?

Convex mirrors are used as vehicle wing mirrors and as safety mirrors at blind corners. Concave mirrors are used in make-up mirrors, torch reflectors, telescopes and solar cookers.

Is the curved mirror safe in sunlight?

Keep it out of direct sun. A concave mirror can concentrate sunlight into a hot spot that could scorch materials or harm eyes.

How should the mirror be cleaned?

Wipe it gently with a soft, lint-free cloth, slightly damp if needed. Avoid paper towels, abrasive powders and solvents, which scratch or cloud the reflecting surface.

Last Updated: September 2026

Plant Cell Structure EVA Model

Quick Answer: The Plant Cell Structure EVA Model is a teaching model of a plant cell made from EVA foam, representing the main plant-cell structures, such as the cell wall, chloroplasts and large central vacuole, in a form students can hold and discuss. It is used in school biology lessons on cell structure.

What the Plant Cell Model Represents

A plant cell differs from an animal cell in three features every student must learn: a rigid cellulose cell wall outside the membrane, chloroplasts where photosynthesis takes place, and a large permanent vacuole filled with cell sap that keeps the cell firm. Plant cell models of this type show those differences at a size a whole class can see, alongside the structures both cell types share, such as the nucleus, cytoplasm, cell membrane and mitochondria.

EVA, short for ethylene-vinyl acetate, is a light, soft foam that resists water, so the model can be handled by young students, passed round the room and wiped clean, and it will not shatter if dropped. Foam models are often built from layered or fitted pieces that let students remove and name structures; whether this model has removable parts should be confirmed.

Teachers use the model before microscope work, so students know what to look for in onion epidermis or pondweed leaf slides, and afterwards to explain what the microscope could not show. A school light microscope reveals the cell wall, nucleus and chloroplasts, while mitochondria and ribosomes are too small to see clearly in routine preparations, a gap the model fills.

Specifications

Item	Plant cell structure teaching model
Material	EVA (ethylene-vinyl acetate) foam
Represents	A generalised plant cell and its main organelles
Key plant features	Cell wall, chloroplasts, large central vacuole
Level	Middle and secondary school biology
Size, labelling and removable parts	Confirm at enquiry

Teaching Uses

Introducing organelles and their functions before microscope practicals
Comparing plant and animal cells side by side
Revision quizzes in which students point to and name each structure
Explaining turgor and photosynthesis at the level of a single cell

Care & Handling

Wipe with a damp cloth and mild soap; EVA foam tolerates water but not solvents.
Keep the model away from heaters and direct sun, which can distort foam.
Use removable labels rather than permanent markers on the surface.
Store it flat in a box so thin parts are not bent.

Why Choose LabEquip

Biology teachers choose foam cell models because they survive years of handling by whole classes. LabEquip lists this one in the STEM kits range, and related teaching models are in the biology models section. Ask about class quantities on the contact page.

Frequently Asked Questions

What are the main differences between a plant cell and an animal cell?

Plant cells have a cellulose cell wall, chloroplasts and a large permanent vacuole. Animal cells lack all three, although both share a nucleus, cytoplasm, cell membrane and mitochondria.

What is EVA foam?

EVA stands for ethylene-vinyl acetate, a soft, light and flexible foam. It is water resistant and does not shatter, which makes it practical for models handled by young students.

Why is the vacuole so large in a plant cell?

The central vacuole stores water and dissolved substances. When full, it presses the cytoplasm against the cell wall and keeps the cell firm, or turgid, which helps the plant stay upright.

Can students see these structures under a school microscope?

The cell wall and nucleus are visible in stained onion skin, and chloroplasts in pondweed or moss leaves. Mitochondria and ribosomes are too small to see clearly in routine school preparations.

How should the model be cleaned?

Wipe it with a damp cloth and a little mild soap, then let it air dry. Avoid solvents and alcohol wipes on painted areas, as they can lift the colour.

Does the model have labels or removable parts?

That depends on the version. Whether this model has printed labels or detachable organelles should be confirmed at enquiry, so labelling activities can be planned.

Last Updated: September 2026

Sound Reflection Demonstration Model

Quick Answer: The Sound Reflection Demonstration Model is a physics teaching apparatus for showing that sound reflects from a hard surface in the same way light reflects from a mirror, with the angle of incidence equal to the angle of reflection. It is used in school lessons on the laws of reflection of sound.

The Classic Two-Tube Experiment

The standard school experiment points two tubes at a smooth, hard reflecting surface. A steady, quiet sound source, such as a ticking clock or a small buzzer, is placed at the open end of one tube, and a student listens at the end of the second tube while it is swung to different angles. The tick is loudest when the second tube makes the same angle with the normal as the first. A screen between the tubes stops sound travelling directly from source to ear. Apparatus of this kind is usually built around that arrangement, often with an angle scale; confirm the construction of this model.

The experiment establishes three points: the angle of incidence equals the angle of reflection; the incident sound, the reflected sound and the normal lie in one plane; and hard, smooth surfaces reflect sound far better than soft ones. Replacing the reflector with a cushion or a sheet of foam and repeating the test demonstrates absorption, which leads naturally into acoustic design.

Reflection of sound explains echoes, the curved ceilings of concert halls, sound boards behind stages and the use of megaphones and ear trumpets, and it is the principle behind sonar and echo-location. Older pupils can calculate distances from echo times using the speed of sound in air, about 340 metres per second at room temperature.

Specifications

Item	Demonstration apparatus for the laws of reflection of sound
Principle	Angle of incidence equals angle of reflection
Usual arrangement	Two tubes aimed at a hard reflector, with a screen between them
Sound source	A steady, quiet source such as a ticking clock or small buzzer
Level	Middle and secondary school physics
Construction and angle scale	Confirm at enquiry

Where It Fits in the Syllabus

Verifying the laws of reflection of sound in a class practical
Comparing reflection from hard and soft surfaces to introduce absorption
Explaining echoes, concert-hall design and sonar
Linking the reflection of sound and of light in one lesson

Care & Handling

Run the experiment in a quiet room and keep the class silent while readings are taken.
Keep the tubes clean and dry inside, since debris muffles the sound.
Wipe the reflecting surface gently and avoid scratching or denting it.
Store the tubes supported along their length so they do not bend or dent.

Why Choose LabEquip

Physics teachers buy this model because the two-tube experiment is awkward to improvise with card tubes and textbooks. LabEquip lists it in the STEM kits range, and the Curved Mirror Fun Model makes a matching reflection demonstration for light. Contact us through the contact page for class sets.

Frequently Asked Questions

What are the laws of reflection of sound?

The angle of incidence equals the angle of reflection, and the incident sound, the reflected sound and the normal all lie in the same plane. These are the same laws that apply to light.

Why is a screen placed between the two tubes?

Without it the listener hears sound travelling straight from the source as well as the reflected sound. The screen blocks the direct path, so the result depends on reflection alone.

What sound source works well?

A steady, quiet sound such as a ticking clock or a small buzzer. Loud sources spread in every direction and make the loudest angle harder to find.

Why should the reflecting surface be hard and smooth?

Hard, smooth surfaces reflect most of the sound energy. Soft or rough materials absorb or scatter it, which is why curtains and carpets reduce echoes in a room.

How is an echo related to this experiment?

An echo is reflected sound that reaches the listener at least about a tenth of a second after the original. The experiment shows the reflection; an echo adds the time delay caused by distance.

How can students measure distance using echoes?

Time the echo from a distant wall, multiply by the speed of sound in air, about 340 metres per second, and halve the result because the sound travels there and back.

Last Updated: September 2026

Planisphere

Quick answer: The Planisphere is a rotating star-chart tool that helps students and astronomy learners identify visible stars and constellations for any selected date and time, making it easy to see how the night sky changes through the year.

Product Description

The LabEquip Planisphere provides a practical way to study the apparent arrangement of stars and constellations in the night sky. By rotating the adjustable sections of the chart to a chosen date and time, learners can explore which celestial objects may be visible at that moment.

A planisphere demonstrates that the visible sky changes according to observer location, date and time, and supports astronomy lessons covering constellations, seasonal star patterns and the apparent rotation of the night sky. Exact chart diameter, materials and latitude range are not stated in this listing; we have not invented these figures and recommend confirming them with our sales team before ordering.

Specifications

Specification	Detail
Product name	Planisphere
Brand	LabEquip
Product category	Astronomy laboratory apparatus; rotating star-identification chart
Primary function	Identifying visible stars and constellations for a given date and time
Chart diameter / materials / latitude range	Not stated in this listing — confirm with our sales team

Suggested Use

Rotate the adjustable disc to align the current date with the current time.
Hold the planisphere overhead, matching its orientation to the compass directions.
Identify visible constellations and stars shown within the viewing window.
Repeat at different dates and times to observe how the visible sky changes through the year.

Care & Maintenance

Keep the rotating discs clean and free of dust for smooth movement.
Store flat or in a protective sleeve to avoid bending.
Avoid exposure to moisture, which can warp printed charts.
Handle the central rivet or fastening point gently to preserve rotation.

Why Choose LabEquip

LabEquip supplies physics, chemistry and biology lab equipment, STEM kits and astronomy models for schools, colleges and institutional laboratories, with honest specifications and responsive sales support. For related astronomy learning tools, see our LabEquip homepage to browse our full catalogue of astronomy lab kits.

Frequently Asked Questions

What is a planisphere used for?

It is used to identify which stars and constellations are visible in the night sky for a given date, time and location.

What latitude range does this planisphere cover?

The exact latitude range is not stated in this listing. Please confirm suitability for your location with our sales team before ordering.

Is the planisphere suitable for classroom use?

Yes, it is designed as an accessible teaching tool for astronomy lessons on constellations and the apparent rotation of the night sky.

Do I need any other equipment to use it?

No additional equipment is required; the planisphere is a standalone reference tool, though a dim red flashlight can help with night-time reading.

How should I store the planisphere?

Store it flat or in a protective sleeve, away from moisture, and keep the rotating discs clean and dust-free.

Last Updated: September 2026

Hanging Planetary System Display

Quick answer: The Hanging Planetary System Display is a suspended classroom model that presents the Sun and planets in a three-dimensional arrangement, helping students understand planetary order and Solar System structure beyond a flat diagram.

Product Description

The LabEquip Hanging Planetary System Display provides a three-dimensional representation of the Solar System for science education. The suspended format allows learners to view planetary relationships vertically and observe the arrangement of celestial bodies in a way a flat diagram cannot show.

The display supports lessons on planetary sequence, Solar System structure, inner and outer planets, and basic space-science concepts. Exact planet sizes, materials, mounting hardware and overall display dimensions are not stated in this listing; we have not invented these figures and recommend confirming them with our sales team before ordering.

Specifications

Specification	Detail
Product name	Hanging Planetary System Display
Brand	LabEquip
Product category	Astronomy laboratory apparatus; suspended Solar System model
Primary function	Presenting the Sun and planets in a suspended classroom display
Planet sizes / materials / mounting hardware / dimensions	Not stated in this listing — confirm with our sales team

Suggested Use

Suspend the display from a ceiling fixture or classroom mounting point at a suitable height.
Use it as a visual reference while teaching planetary order and Solar System structure.
Point out the relative sequence of inner and outer planets around the Sun.
Combine with other astronomy models for a broader space-science lesson.

Care & Maintenance

Dust the suspended components periodically to keep colours and details visible.
Check mounting hardware and strings periodically for wear before hanging or rehanging the display.
Store components carefully when not displayed to avoid tangling or damage.
Keep away from direct sunlight to reduce fading over time.

Why Choose LabEquip

LabEquip supplies physics, chemistry and biology lab equipment, STEM kits and astronomy models for schools, colleges and institutional laboratories, with honest specifications and responsive sales support. For related Solar System teaching resources, see our Planisphere, or visit the LabEquip homepage to browse our full catalogue of astronomy lab kits.

Frequently Asked Questions

What does the Hanging Planetary System Display show?

It shows the Sun and planets suspended in a three-dimensional arrangement to illustrate planetary order and Solar System structure.

What are the planets made from?

The exact materials used for the planets are not stated in this listing. Please confirm with our sales team before ordering.

How is the display mounted?

Exact mounting hardware details are not stated in this listing; our sales team can advise on suitable mounting for your classroom.

Is it suitable for younger students?

Yes, it is designed as an accessible visual teaching aid suitable for a range of school age groups under normal classroom supervision.

How should I care for the display?

Dust it periodically, check mounting hardware for wear, keep it away from direct sunlight, and store components carefully when not displayed.

Last Updated: September 2026

Large Solar System Model

Quick answer: The Large Solar System Model is an enlarged-format astronomy display representing the Sun and all eight planets — Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune — for classroom demonstrations, exhibitions and group astronomy instruction.

Product Description

The LabEquip Large Solar System Model represents the Sun and the eight recognised planets in the Solar System. Its enlarged presentation is intended to make each body easier to identify during classroom demonstrations, exhibitions and astronomy activities, especially with larger groups of students.

The model supports instruction on planetary order, and the distinction between terrestrial and giant planets. Exact overall dimensions, materials and included stand or mounting details are not stated in this listing; we have not invented these figures and recommend confirming them with our sales team before ordering.

Specifications

Specification	Detail
Product name	Large Solar System Model
Brand	LabEquip
Product category	Astronomy laboratory apparatus; large-format Solar System model
Bodies represented	Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Overall dimensions / materials / stand details	Not stated in this listing — confirm with our sales team

Suggested Use

Set up the model on a stable surface or mounting point visible to the whole class or group.
Use it to point out planetary order moving outward from the Sun.
Discuss the difference between terrestrial planets (Mercury, Venus, Earth, Mars) and giant planets (Jupiter, Saturn, Uranus, Neptune).
Use during exhibitions, science fairs or group demonstrations where visibility from a distance matters.

Care & Maintenance

Dust each planet component periodically to keep colours and surface details visible.
Handle larger components carefully to avoid dropping or denting.
Store components in a padded or protective container when not in use.
Keep away from direct sunlight and excess heat to reduce fading or warping.

Why Choose LabEquip

LabEquip supplies physics, chemistry and biology lab equipment, STEM kits and astronomy models for schools, colleges and institutional laboratories, with honest specifications and responsive sales support. For related Solar System teaching resources, see our Hanging Planetary System Display, Planisphere, or visit the LabEquip homepage to browse our full catalogue of astronomy lab kits.

Frequently Asked Questions

Which bodies does the Large Solar System Model represent?

It represents the Sun and all eight recognised planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

What are the overall dimensions of the model?

The exact overall dimensions are not stated in this listing. Please confirm with our sales team before ordering.

Is this suitable for exhibitions and science fairs?

Yes, the enlarged format is intended to make the model easy to view during exhibitions, demonstrations and group instruction.

Does the model include a stand?

Stand and mounting details are not stated in this listing; please confirm with our sales team before ordering.

Last Updated: September 2026

Geological Seismograph Apparatus

Quick answer: The Geological Seismograph Apparatus is an Earth-science teaching model that demonstrates how ground motion can be detected and recorded as a trace, illustrating the basic operating principle behind real seismographs used in earthquake monitoring.

Product Description

The LabEquip Geological Seismograph Apparatus provides a physical reference for explaining how relative motion between a supporting frame and an inertial mass can reveal vibration. In a conventional seismograph, ground movement causes the instrument frame to move while a suspended mass resists rapid motion because of inertia, and this relative motion is recorded as a trace.

The apparatus supports lessons on earthquake monitoring, seismic vibration and the inertia principle behind real seismographs. Exact frame dimensions, materials and recording-mechanism details are not stated in this listing; we have not invented these figures and recommend confirming them with our sales team before ordering.

Specifications

Specification	Detail
Product name	Geological Seismograph Apparatus
Brand	LabEquip
Product category	Earth science / geology laboratory apparatus
Primary function	Demonstrating how ground motion is detected and recorded via inertia
Frame dimensions / materials / recording mechanism	Not stated in this listing — confirm with our sales team

Suggested Use

Set up the apparatus on a stable surface following the supplied instructions.
Gently move or vibrate the supporting frame to simulate ground motion.
Observe how the suspended mass resists this motion due to inertia.
Relate the observed trace or relative movement to how real seismographs record earthquakes.

Care & Maintenance

Keep the frame and recording components clean and free of dust.
Handle the suspended mass and its mounting gently to avoid misalignment.
Store the apparatus in a stable, dry location when not in use.
Check moving parts periodically for wear before classroom demonstrations.

Why Choose LabEquip

LabEquip supplies physics, chemistry and biology lab equipment, STEM kits and Earth-science models for schools, colleges and institutional laboratories, with honest specifications and responsive sales support. For related Earth-science and geology teaching resources, visit the LabEquip homepage to browse our full catalogue.

Frequently Asked Questions

What does the Geological Seismograph Apparatus demonstrate?

It demonstrates how relative motion between a frame and an inertial mass can be used to detect and record ground vibration, similar to how real seismographs work.

What are the frame dimensions and materials?

The exact frame dimensions and materials are not stated in this listing. Please confirm with our sales team before ordering.

Does it produce an actual recorded trace?

The exact recording mechanism is not stated in this listing; our sales team can confirm what output or trace this specific apparatus provides.

Is this suitable for school Earth-science lessons?

Yes, it is designed as an accessible teaching model for lessons on earthquake monitoring and seismic vibration.

Last Updated: September 2026

Eclipse Demonstration Working Model

Quick answer: The Eclipse Demonstration Working Model shows how the Sun, Earth and Moon must align to produce a solar or lunar eclipse, letting students see the umbra and penumbra shadows and compare the two eclipse arrangements directly.

Product Description

The LabEquip Eclipse Demonstration Working Model provides a physical representation of the two principal eclipse arrangements. A solar eclipse is demonstrated by positioning the Moon between the Sun and Earth. A lunar eclipse is demonstrated by positioning Earth between the Sun and Moon.

The working format helps learners compare the umbra and penumbra while distinguishing between solar and lunar eclipse geometry. Exact model dimensions, materials and moving-part mechanism are not stated in this listing; we have not invented these figures and recommend confirming them with our sales team before ordering.

Specifications

Specification	Detail
Product name	Eclipse Demonstration Working Model
Brand	LabEquip
Product category	Astronomy laboratory apparatus; eclipse demonstration model
Primary function	Demonstrating solar and lunar eclipse alignment and shadow formation
Model dimensions / materials / moving-part mechanism	Not stated in this listing — confirm with our sales team

Suggested Use

Position the Moon between the Sun and Earth components to demonstrate a solar eclipse.
Position Earth between the Sun and Moon components to demonstrate a lunar eclipse.
Point out the umbra (full shadow) and penumbra (partial shadow) regions in each arrangement.
Discuss why eclipses do not occur every month, relating this to orbital tilt.

Care & Maintenance

Handle the Sun, Earth and Moon components carefully to avoid damaging any moving mechanism.
Keep components clean and free of dust for clear visual demonstration.
Store the model in a stable location when not in use.
Check any moving joints or rods periodically for wear.

Why Choose LabEquip

LabEquip supplies physics, chemistry and biology lab equipment, STEM kits and astronomy models for schools, colleges and institutional laboratories, with honest specifications and responsive sales support. For related astronomy teaching resources, see our Large Solar System Model, Hanging Planetary System Display, or visit the LabEquip homepage to browse our full catalogue of astronomy lab kits.

Frequently Asked Questions

What does the Eclipse Demonstration Working Model show?

It shows how the Sun, Earth and Moon must align to produce a solar or lunar eclipse, including the umbra and penumbra shadow regions.

What is the difference between a solar and lunar eclipse in this model?

A solar eclipse is shown by placing the Moon between the Sun and Earth, while a lunar eclipse is shown by placing Earth between the Sun and Moon.

What materials is the model made from?

The exact materials are not stated in this listing. Please confirm with our sales team before ordering.

Is this suitable for classroom demonstrations?

Yes, it is designed as an accessible working model for classroom lessons on eclipse geometry and Solar System alignment.

How should I care for the model?

Handle the components carefully, keep them clean and dust-free, store the model in a stable location, and check moving joints periodically for wear.

Last Updated: September 2026