How does a spectrophotometer work?

How does a spectrophotometer work?

Here’s how a spectrophotometer works. A lamp provides the source of light. The beam of light strikes the diffraction grating, which works like a prism and separates the light into its component wavelengths. The grating is rotated so that only a specific wavelength of light reaches the exit slit. Then the light interacts with the […]

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How Modern Light Bulbs Work

How Modern Light Bulbs Work

Light bulbs used to be simple: just run a bunch of electrical current through a thin wire until it heats up enough to start glowing. Bare filament electric lamps were first demonstrated around 1800 by Humphry Davy, and the glass bulb was added later to keep oxygen away from the wire so it could glow […]

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How 3D Glasses Work

How 3D Glasses Work

You may have recently gone to a movie theater, put on 3D glasses, and watched a 3D movie. If so, you may have noticed that if you removed your glasses, the picture on the screen was weird and distorted. But with the glasses on, the distorted 2D image was a clear 3D. This video will […]

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The Visual System: How Your Eyes Work

The Visual System: How Your Eyes Work

Your eyes allow you to see the world around you. But have you ever wondered how they work? First, it’s important to know that vision depends on your brain as much as on your eyes. Your eyes’ main job is to detect patterns of light. Then, they work with your brain to turn those patterns […]

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My Thoughts on the Science Fair (I didn’t like it)

My Thoughts on the Science Fair (I didn’t like it)

Science fair. (inhales with nose) AAAAAAAAAAHHHHHHHH!!!!!! (screaming noise) I was talking to a friend saying, “Oh , I know. I can do a video about the science fair, and you know talk about how much it SUCKS!’ And she said, “Oh, at my school, we didn’t do the science fair.” WHUUUUUUUUUUUUUUUUU— That got me wondering. […]

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How a Laser Works

How a Laser Works

How a Laser Works EngineerGuy Series #4 For years lasers have been a hallmark of science fiction yet much of our technology today depends on them Range finding devices, optical communications, and of course, bar code scanners. The unique characteristics of laser light make all these things possible. However, its use by eye surgeons to […]

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