Physics

What does a double rainbow mean?
A rainbow is a visible spectrum of light that occurs when light is reflected in water droplets in the atmosphere. Spotting...
How do you drop an egg without breaking it?
Middle and high school students are often challenged with a project that requires them to build some type of device to...
Examples of Compound Machines?
A compound machine is a device that is made up of two or more simple machines. They perform more complex works than the...
Robert Hooke Discover Cells?
The cell was discovered by Robert Hooke in 1665. He came up with the cell theory, that cells are the basic unit of structure...
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