What gives off electromagnetic radiation? What is electromagnetic energy? What is the source of all energy on Earth? What is the energy of a photon of blue light? What material reflects light best? What makes electromagnetic waves? Which color of light carries the most energy per photon?
What makes electromagnetic waves? What do electromagnetic waves carry? What are examples of devices that use electromagnetic waves? What type of waves are electromagnetic waves? What are the characteristics of electromagnetic radiation? Which property describes an electromagnetic wave and not a mechanical...
They make a path for radio waves to follow in our atmosphere. 它可以使无线电波按照一定途径进入我们的大气。 These natural waveguides occur when the Sun is rising or setting, which makes sunrise and sunset good times to pick up VLF emissions. 当日出或日落的时候,这些波导就会产生,这样日出日落时...
A waveguide, usually it refers to a device, like a metal conductor, that's used to guide and direct waves. But waveguides also occur naturally—they make a path for radio waves to follow in our atmosphere. These natural waveguides occur when the Sun is rising or setting, which makes sun...
Define what to make. what to make synonyms, what to make pronunciation, what to make translation, English dictionary definition of what to make. v. made , mak·ing , makes v. tr. 1. To cause to exist or happen; bring about; create: made problems for us;
Electric current can produce electromagnetic fields, which are used in inductors, transformers, generators, and motors. In electric conductors, current causes resistive heating or joule heating which makes light in an incandescent lamp. A time-varying electric current produces electromagnetic waves, which...
Electromagnetic radiation is a form of energy that includes radio waves, microwaves, X-rays and gamma rays, as well as visible light.
Ray tracing is an important simulation technique based on its relative accuracy (for many situations) combined with its general computational efficiency, compared to more rigorous methods of propagating electromagnetic waves. Ray tracing can be combined with other computational algorithms to more accurately...
So far we’ve got that current flowing in the same direction down two wires makes those wires attract, and current flowing in opposite directions makes them repel. To get the magnets of your childhood (some of our childhoods) all you have to do is turn that wire into a loop. ...
The key observation that makes the above equivalences work is that this relation is continuous in the sense that if is an open subset of , then the inverse image is also open. Indeed, if for some , then contains a finite set such that , and then any that contains both and lies in ...