Shopping cart Remove item Thumbnail image Product Price Quantity Subtotal × Micro USB B Cables $1.69 Micro USB B Cables quantity $1.69 × Demonstration Diffraction Grating Slide $6.17 Demonstration Diffraction Grating Slide quantity $6.17 Coupon: Apply coupon Update cart {{#message}}{{{message}}}{{/message}}{{^message}}Your submission failed. The server responded with {{status_text}} (code {{status_code}}). Please contact the developer of this form processor to improve this message. Learn More{{/message}}{{#message}}{{{message}}}{{/message}}{{^message}}It appears your submission was successful. Even though the server responded OK, it is possible the submission was not processed. Please contact the developer of this form processor to improve this message. Learn More{{/message}}Submitting… Cart totals Subtotal $7.86 Shipment Free shipping Shipping to Delhi. Change address Country / region Select a country / region… India State / County Select an option… Andaman and Nicobar IslandsAndhra PradeshArunachal PradeshAssamBiharChandigarhChhattisgarhDaman and DiuDādra and Nagar Haveli and Damān and DiuDelhiDadra and Nagar HaveliGoaGujaratHimachal PradeshHaryanaJharkhandJammu and KashmirKarnatakaKeralaLadakhLakshadweepMaharashtraMeghalayaManipurMadhya PradeshMizoramNagalandOdishaPunjabPondicherry (Puducherry)RajasthanSikkimTelanganaTamil NaduTripuraUttar PradeshUttarakhandWest Bengal City: Postcode / ZIP: Update {{#message}}{{{message}}}{{/message}}{{^message}}Your submission failed. The server responded with {{status_text}} (code {{status_code}}). Please contact the developer of this form processor to improve this message. Learn More{{/message}}{{#message}}{{{message}}}{{/message}}{{^message}}It appears your submission was successful. Even though the server responded OK, it is possible the submission was not processed. Please contact the developer of this form processor to improve this message. Learn More{{/message}}Submitting… Total $7.86 Proceed to checkout