Physics
Scientists Say: Doppler effect
The Doppler effect is a perceived change in the frequency of light or sound waves due to the wave source moving relative to an observer.
MS-PS4-3
Integrate qualitative scientific and technical information to support the claim that digitized signals (sent as wave pulses) are a more reliable way to encode and transmit information.
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TechA sense of touch could upgrade virtual reality, prosthetics and more
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TechHeadphones or earmuffs could replace needles in some disease testing
A new system that uses earmuffs to collect gases coming out the skin could help doctors diagnose a variety of diseases, scientists say.
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PhysicsNuclear clocks are nearly here
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Materials ScienceNew device gets power from 5G signals grabbed from the air
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SpaceIngenuity helicopter makes history by flying on Mars
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Tech5G promises new energy savings for digital tech
A new way to transmit wireless communications promises time and energy savings by using networks of smaller cells.
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ComputingMachine learning includes deep learning and neural nets
By combining patterns found in mountains of data with information gleaned from mistakes, these computer programs expand their artificial intelligence.
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Science & SocietyNew technology can get inside your head. Are you ready?
New technologies aim to listen to — and maybe even change — your brain activity. But just because scientists can do this, should they?