Animal world
The strange ghost crab has no tongue but still makes a cry, the X-ray expert has just figured it out
Can ghost crabs make calls? How is that?
Doppler
Browse ScienceInfo articles and explainers related to Doppler.
Topic archive
Articles about Doppler
16 published items.
Space science
Super-Earth discovered very close to the solar system
Astronomers found the exoplanet Proxima c orbiting the red dwarf Proxima Centauri, only 4.2 light-years from Earth.
Space science
How does light help people explore the universe?
State-of-the-art technology can send people to the moon and satellites to the edge of the Solar System. But these distances are nothing to the vast interstellar space
Space science
NASA publishes sharp images of unprecedented sharp images of black holes
In response to the ongoing black hole week, NASA recently released the first simulation image of a black hole with unprecedented sharpness.
Discover science
Why do bombs make whistling sounds when they fall?
For those who are not familiar with military technology, this whistling whistle may sound quite strange, they may think that at the battlefield giving such warning sound…
Discover science
Why is the night sky black?
A very silly question about an obvious fact, though not everyone knows about it.
Discover science
Why did Santa get through the chimney without being detected?
British researchers used Albert Einstein's Theory of Relativity to explain scientifically why Santa brought gifts through chimneys on Christmas Eve without being detecte…
Space science
Revealing the first true image of a black hole
A group of researchers around the world include groups operating radio signal receiving stations and a group of scientists at Massachussets University of Technology (MIT…
Scientific application
Motor vehicle speed measuring device displays images
As a vehicle speed measuring device using the principle of receiving and broadcasting using Doppler Radar effect, it allows accurate vehicle speed measurement, while dis…
Environment
Why is the weather forecast often wrong?
The weather, always a difficult woman to change her xinxing even faster than rotating outages ...
Medicine - Health
Should make color or black and white ultrasound?
Ultrasound has become an increasingly popular means of health examination, sometimes without the need for a doctor. Besides black-and-white ultrasound, color ultrasound…
New technology
Equip the radar for the phone
Radar can appear in a variety of devices including mobile phones thanks to the invention of small chips with fingernails for just over a dollar.
New technology
Look through the walls with Wi-Fi waves
British engineers at University College London have studied a passive radar system that allows them to see through walls using Wi-Fi signals generated by wireless router…
New technology
New device for blood flow measurement for burn patients
The device, called 'Doppler Laser Imaging', was developed by Aimago, a start-up company based at the Ecole Polytechnique de Lausanne, Switzerland, which is desig…
New technology
Use radar tracking baby
Engineers at the University of Florida used radar technology commonly used in military surveillance equipment