Write & See Squares

Name: Write & See Squares
Brand: Teacher Source
SKU: SS-910
Price: 18.75 USD
Availability: InStock
Rating: 5.00 (4 reviews)

SKU #SS-910

(4 reviews)

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Availability: In Stock

$18.75

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Teach Albert Einstein's Photoelectric effect!!!

Description

Move the blue light across the Write and See Square and observe the brightly glowing trail. Violet light has enough energy to excite the phosphorescent pigment in the vinyl. The excited pigment then slowly releases energy as green light (the "glow" look). Red Light does not have enough energy to affect the pigment. Contains a mounted sheet of phosphorescent vinyl ~15 x 15 cm (6" x 6") and an incredible Blue Photon Light LED flashlight on a key-chain ring. Kindergarten through college, teach handwriting skills, or Albert Einstein's Photoelectric effect!!!

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Reviews

4 reviews

2 led flashlights did not work but...

Sep 11, 2021

The customer service was so nice and they replaced them right away!!! Thank you.

Aysun Simpson

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Write & See Squares

Sep 13, 2015

The students were very impressed by this demo. Anything that gets them that interested is big win. Of course I used the blue LED and the UV light and the red laser with it to get them to tell me why the red light did not work.

David Kramer

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Flint hem

May 29, 2012

I love this product, I can put in a box and pull it out every year when I need it. I've purchased all the LED's in ROY G BIV and white light to teach about the visible spectrum and which LEDS have enough energy to excite the electrons.

Jamie Flint

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Energy and Colors of Light

May 23, 2012

Using one of these Write and See Squares with a red and a violet Photon Microlight is my favorite demonstration to show students that violet light really does have more energy than red light. My students never forget this quick and easy demonstration.

Lisa Ogiemwonyi

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Write & See Squares

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