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10 Scientific Laws and Theories You Really Should Know
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Even if you don't operate a scanning electron microscope all that frequently, you might want to brush up on these 10 scientific laws and theories. After all, they're some of our best tools for describing how the universe works.
How are frequency and wavelength of light related?
science.howstuffworks.com/dictionary/physics-terms/frequency-wavelength-light.htm
Frequency has to do with wave speed and wavelength is a measurement of a wave's span. Learn how frequency and wavelength of light are related in this article.
How Acoustic Levitation Works
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The idea that something so intangible as acoustic levitation can lift objects may seem unbelievable, but it's a real phenomenon.
How Light Propulsion Will Work
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Like many new technologies, light propulsion was originally conceived as a tool of war and national defense. But the "Star Wars" missile defense system may eventually send rockets, rather than missile-destroying lasers, into space.
How Military Snipers Work
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Military snipers are highly trained sharpshooters that can hit a target from great distances. Learn about military snipers and military sniper training.
How big does a meteor have to be to make it to the ground?
science.howstuffworks.com/question486.htm
How big is a shooting star? Do they land on earth or do they burn up? Learn how what tiny particles of space dust have to do with meteors.
How Airlines Clean Planes So Quickly
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Cleaning an airliner for the next flight is a complex undertaking that must be carried out rapidly. And it's even more important now during the coronavirus pandemic.
How to Spot the International Space Station From Where You Live
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NASA's Spot the Station feature will text or email you when the ISS is about to be overhead. And you won't even need a telescope to see it!
10 Surprising Facts About Astronaut Training
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NASA astronauts have to undergo serious training before becoming approved for a trip to space. But some of that training is certainly not what you'd expect.
How Auroras Work
science.howstuffworks.com/nature/climate-weather/atmospheric/aurora.htm
An aurora is a light phenomenon caused by solar winds interacting with the Earth's magnetic field. Learn more about auroras.