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How Acoustic Levitation Works
science.howstuffworks.com/acoustic-levitation.htm
The idea that something so intangible as acoustic levitation can lift objects may seem unbelievable, but it's a real phenomenon.
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 Light Propulsion Will Work
science.howstuffworks.com/light-propulsion.htm
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 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 Military Snipers Work
science.howstuffworks.com/sniper.htm
Military snipers are highly trained sharpshooters that can hit a target from great distances. Learn about military snipers and military sniper training.
How Airlines Clean Planes So Quickly
science.howstuffworks.com/transport/flight/modern/airlines-clean-planes-quickly.htm
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
science.howstuffworks.com/nasa-spot-the-international-space-station.htm
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
science.howstuffworks.com/10-surprising-facts-about-astronaut-training.htm
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.
Who Invented the Telegraph?
science.howstuffworks.com/innovation/inventions/telegraph.htm
The telegraph was a groundbreaking invention that transformed communication in the 19th century. Explore its impact on news media and global connectivity.