Origin of electromagnetic radiation
How to use electromagnetic radiation in a sentence
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He was very familiar with the reality of what could happen: Tokyo could be covered with a really high dosage of radiation.
Everything serene, snow piling on trees, over lawns, on houses, before we realize that all the snow is poisoned with radiation.
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She said that whenever she came into the room, she had felt the radiation of a vast and unseen force.
He went off whistling, and Isabel raised her hand and looked at it meditatively; his own had been unexpectedly warm and magnetic.Ancestors|Gertrude Atherton
Undoubtedly the first improvements to be named must be the pneumatic and electro-pneumatic actions.
Before the invention of pneumatic and electro-pneumatic action, organs were almost invariably constructed in a single mass.
He commenced to experiment in electro-pneumatics in the year 1860, and early in 1861 communicated his discoveries to Mr. Barker.
Your electro-plated butter-dish, or whatever it's going to be, will be simply flung back at you.First Plays|A. A. Milne
British Dictionary definitions for electromagnetic radiation
Medical definitions for electromagnetic radiation
Scientific definitions for electromagnetic radiation
A Closer Look
In the nineteenth century, physicists discovered that a changing electric field creates a magnetic field and vice versa. Thus a variation in an electric field (for example, the changing field created when a charged particle such as an electron moves up and down) will generate a magnetic field, which in turn induces an electric field. Equations formulated by James Clerk Maxwell predicted that these fields could potentially reinforce each other, creating an electromagnetic ripple that propagates through space. In fact, visible light and all other forms of electromagnetic radiation consist exactly of such waves of mutually reinforcing electric and magnetic fields, traveling at the speed of light. The frequency of the radiation determines how it interacts with charged particles, especially with the electrons of atoms, which absorb and reemit the radiation. The energy of the electromagnetic radiation is proportional to its frequency: the greater the frequency of the waves, the greater their energy. Electromagnetic radiation can also be conceived of as streams of particles known as photons. The photon is the quantum (the smallest possible unit) of electromagnetic radiation. In quantum mechanics, all phenomena in which charged particles interact with one another, as in the binding of protons and electrons in an atom or the formation of chemical bonds between atoms in a molecule, can be understood as an exchange of photons by the charged particles.
Cultural definitions for electromagnetic radiation
Any type of electromagnetic wave.