https://padlet.com/mendozanayzethe/electromagenticwaves en-us 2017-02-15 19:12:37 UTC 2023-03-28 05:11:07 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/173134124/d59d1ad0fdfc429ca51a88fff592ba5a/MV5BMjA4MTAzMzgxMV5BMl5BanBnXkFtZTgwOTI5MzU2NzE___V1_UX214_CR0_0_214_317_AL_.jpg mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156894452
Electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum. The oscillations of the two fields are perpendicular to each other and perpendicular to the direction of energy and wave propagation, forming a transverse wave. The wave front of electromagnetic waves emitted from a point source (such as a light bulb) is a sphere. The position of an electromagnetic wave within the electromagnetic spectrum can be characterized by either its frequency of oscillation or its wavelength. The electromagnetic spectrum includes, in order of increasing frequency and decreasing wavelength: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.

]]> 2017-02-28 23:54:44 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156894452 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156894787 2017-02-28 23:58:33 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156894787 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156895154 The different types of electromagnetic radiation shown in the electromagnetic spectrum consists of radio waves, microwaves, infrared waves, visible light, ultraviolet radiation, X-rays, and gamma rays. The part of the electromagnetic spectrum that we are able to see is the visible light spectrum.]]> 2017-03-01 00:02:19 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156895154 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156895261 Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 GHz to as low as 3 kHz, though some definitions describe waves above 1 or 3 GHz as microwaves, or include waves of any lower frequency. At 300 GHz, the corresponding wavelength is 1 mm (0.039 in), and at 3 kHz is 100 km (62 mi). Like all other electromagnetic waves, they travel at the speed of light. Naturally occurring radio waves are generated by lightning, or by astronomical objects.]]> 2017-03-01 00:03:23 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156895261 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156895554 Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between 300 MHz (100 cm) and 300 GHz (0.1 cm).]]> 2017-03-01 00:06:10 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156895554 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156895706 Infrared radiation, or simply infrared or IR, is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore invisible, although it is sometimes loosely called infrared light. It extends from the nominal red edge of the visible spectrum at 700 nanometers (frequency 430 THz), to 1000000 nm (300 GHz) although people can see infrared up to at least 1050 nm in experiments. Most of the thermal radiation emitted by objects near room temperature is infrared. Like all EMR, IR carries radiant energy, and behaves both like a wave and like its quantum particle, the photon.]]> 2017-03-01 00:07:25 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156895706 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156896101
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm. In terms of frequency, this corresponds to a band in the vicinity of 430–770 THz.
The spectrum does not, however, contain all the colors that the human eyes and brain can distinguish. Unsaturated colors such as pink, or purple variations such as magenta, are absent, for example, because they can be made only by a mix of multiple wavelengths. Colors containing only one wavelength are also called pure colors or spectral colors.
Visible wavelengths pass through the "optical window", the region of the electromagnetic spectrum that allows wavelengths to pass largely unattended through the Earth's atmosphere. An example of this phenomenon is that clean air scatters blue light more than red wavelengths, and so the midday sky appears blue. The optical window is also referred to as the "visible window" because it overlaps the human visible response spectrum. The near infrared (NIR) window lies just out of the human vision, as well as the Medium Wavelength IR (MWIR) window, and the Long Wavelength or Far Infrared (LWIR or FIR) window, although other animals may experience them.

]]> 2017-03-01 00:10:43 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156896101 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156896576 Ultraviolet (UV) light has shorter wavelengths than visible light. Although UV waves are invisible to the human eye, some insects, such as bumblebees, can see them.]]> 2017-03-01 00:15:20 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156896576 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156896809 http://www.livescience.com/32344-what-are-x-rays.html]]> 2017-03-01 00:17:27 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156896809 mendozanayzethe https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156897126 Gamma ray (also called gamma radiation), denoted by the lower-case Greek letter gamma, is extremely high-frequency electromagnetic radiation and therefore consists of high-energy photons. Paul Villard, a French chemist and physicist, discovered gamma radiation in 1900 while studying radiation emitted by radium. In 1903, Ernest Rutherford named this radiation gamma rays.]]> 2017-03-01 00:20:34 UTC https://padlet.com/mendozanayzethe/electromagenticwaves/wish/156897126