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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
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Description
Solar Cell Science FunAlbert Einstein won his Nobel Prize in 1921 especially for his discovery of the photoelectric effect. We think this is a great kit that clearly and tangibly demonstrates the photoelectric effect. The kit includes solar cell, electric motor, wires, the reflective disk, and an informative sheet packed with ideas for science projects. You can feel the torque on the disk with your fingers. Designed to help you explore and learn about the abundant power of
Albert Einstein won his Nobel Prize in 1921 especially for his discovery of the photoelectric effect. We think this is a great kit that clearly and tangibly demonstrates the photoelectric effect. The kit includes solar cell, electric motor, wires, the reflective disk, and an informative sheet packed with ideas for science projects. You can feel the torque on the disk with your fingers. Designed to help you explore and learn about the abundant power of solar energy. For ages 9+. Solar cell and motor made in China; disc, foil and assembly in the USA. "Small Parts Warning"Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
The Ideal Organizer
The UPERGO Valet Tray is an ideal size for my nightstand. It does not slide around but stays put where I position it. Each section is useful for the items I want to keep close at hand but in an organized fashion, cell phone, wallet glasses, change, etc. I love the cork interior of the tray; it’s stylish and functional.
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Reviewed in the United States on December 9, 2025
★★★★★ 4
It's a functional organizational tray
I bought this valet tray for my nephew to be able to organize his go-to items, such as his cell phone, wallet, watch, bracelet, etc. I expected the tray to look more upgraded. The compartments are shallow, but they do the job. It is made of a cardboard-type material ( corkboard would have been nicer), and the black platform is a metal construction, which gives it a more stable and solid structure. Overall, for the price and its functionality, I guess it was worth the purchase.
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Reviewed in the United States on January 15, 2026
★★★★★ 5
Really wonderful
Beautiful and realy convenient to use.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Good bang for buck
Nice and budget friendly valet tray, would buy again!
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Reviewed in the United States on January 19, 2026
★★★★★ 5
Great organizer! No more lost stuff!
We bought this for a friend who was always misplacing his keys, badge, wallet, etc... This has helped him get his every day carry stuff organized and he has not "lost" anything since.
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Reviewed in the United States on May 13, 2026