What Is a Hologram?
A hologram is a physical structure that diffracts light into an image. The term ‘hologram’ can refer to both the encoded material and the resulting image. A holographic...
Read MoreA hologram is a physical structure that diffracts light into an image. The term ‘hologram’ can refer to both the encoded material and the resulting image. A holographic...
Read MoreWhat Is an Isosceles Triangle? An isosceles triangle has two equal angles (and two equal sides). The angles can vary, as long as two are equal. For example, a triangle...
Read MoreHow Do We Measure the Height of a Mountain? Most of our figures for mountain heights were obtained with an “altimeter.” This is kind of barometer that uses...
Read MoreWhat Makes a Boomerang Fly? Boomerangs used most famously by the Australian Aborigines use a very complex combination of physics and aerodynamics to perform their...
Read MoreRainbows are curved because the raindrops that reflect the light are curved themselves. The arc of color you see is just part of the rainbow. This is because a rainbow...
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