Understanding Radio Waves and Radar Technology Air-Based Radar Ground-Based Radar CW Radar vs. Pulse Radar Radar System Basics When people use radar, they are usually trying to accomplish one of three things: Detect objects: Usually, the object is moving, like an airplane being detected by air...
When your eyes detect the light from the virtual image, your brain interprets it as a beam of light reflected from a real object. Your brain uses multiple cues, including, shadows, the relative positions of different objects, distances and parallax, or differences in angles, to interpret this...
fMRI is based on the same technology asmagnetic resonance imaging(MRI) -- a noninvasive test that uses a strong magnetic field and radio waves to create detailed images of the body. But instead of creating images of organs and tissues like MRI, fMRI looks atbloodflow in the brain to detec...
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But if you really want to keep your hands free to battle corruption, you should go keyless. With a keyless ignition system, you keep a key fob in your pocket. A sensor will detect the key fob's presence in the car and start; all the driver has to do is push a button on the ...
How to Detect and Eliminate WiFi Interference with NetSpot WiFi Interference — FAQs What Is Wireless Interference and How Does It Affect Wi-Fi Performance? Wireless interference occurs when external factors disrupt the radio waves your Wi-Fi relies on to communicate with devices. These disruption...
Radar is the use of radio waves to detect and monitor various objects. The simplest function of radar is to tell you how far away an object is. To do this, the radar device emits a concentrated radio wave and listens for any echo. If there is an object in the path of the radio wav...
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Amateur radio is limited by the distance that radio waves can travel. To send a signal to the other side of the world requires calculated timing and more than a little bit of luck. Every 11 years, for example, there's a peak in the number of sunspots produced by the sun, which increa...
of the radio waves you're trying to detect that determines the size and type of the antenna you need to use. Broadly speaking, the length of a simple (rod-type) antenna has to be about half the wavelength of the radio waves you're trying to receive (it's also possible to make anten...