Wave

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1,097 published items.

Why can't firefighters hear the alarm?
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Why can't firefighters hear the alarm?

Firefighters are equipped with emergency alarms with quite large sound intensity. However, their colleagues participating in fire fighting often do not hear this alarm.…

December 18, 2018
Decode white light at death
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Decode white light at death

The survey showed that a series of electroencephalic impulses arose in mice right after death, leading scientists to hypothesize that the near-death experience is very l…

December 18, 2018
Light granular or waveform?
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Light granular or waveform?

A recent experiment (November 2) by scientists at the University of Bristol in England showed for the first time that light in the form of particles and waves simultaneo…

December 18, 2018
Why is there a wave in the sea shell?
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Why is there a wave in the sea shell?

Put a large shell or shell in your ear, you will hear the soft waves of the sea. However, the vast ocean cannot get into that small shell. so what sound? The answer is t…

December 18, 2018
Sleep secret
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Sleep secret

This is an important highlight that the world's leading expert on sleep, Dr. Dang Vu Thien Thanh shared with PV. He has studied for many years in this field at the Unive…

December 18, 2018
The 15 most adventurous games on the planet
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The 15 most adventurous games on the planet

Adventure always challenges all qualities of people but makes us feel like a conqueror. Here are the most legendary, most challenging, most glamorous, most adventurous,…

December 18, 2018
People can still study while sleeping
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People can still study while sleeping

The organs in the brain record new words before going to bed and after waking up, they will remember more clearly than when they first started.

December 18, 2018
'Dissection' wireless charging technology
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'Dissection' wireless charging technology

Currently, each individual often has many devices such as computers, phones, music players ... and dozens of chargers with cordless wires.

December 18, 2018
Wi-Fi waves can harm children
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Wi-Fi waves can harm children

Scientists worry that Wi-Fi transmitters can cause bad symptoms in children, such as headaches, dizziness, and insomnia.

December 18, 2018