electromagnetic spectrum feature
An intuitive look at the electromagnetic force whose energy can both carry a cell phone call and rip apart an atom. One of the four fundamental forces of nature, this force permeates our everyday world — but hasn’t captured the public imagination in the way gravity has. original soundtrack by pat irwin of the B52s.
Read MoreElectromagnetic Spectrum: Radio Waves
Science & Reason on Facebook: tinyurl.com Science@NASA: EMS Electromagnetic Spectrum (Episode 2) – Radio Waves The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. The “electromagnetic spectrum” of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object. — Subscribe to Science & Reason: • www.YouTube.com • www.YouTube.com • www.YouTube.com • www.YouTube.com — MEASURING THE ELECTROMAGNETIC SPECTRUM The electromagnetic (EM) spectrum is just a name that scientists give a bunch of types of radiation when they want to talk about them as a group. Radiation is energy that travels and spreads out as it goes – visible light that comes from a lamp in your house and radio waves that come from a radio station are two types of electromagnetic radiation. Other examples of EM radiation are microwaves, infrared and ultraviolet light, X-rays and gamma-rays. Hotter, more energetic objects and events create higher energy radiation than cool objects. Only extremely hot objects or particles moving at very high velocities can create high-energy radiation like X-rays and gamma-rays. • imagine.gsfc.nasa.gov — RADIO WAVES Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Like all other electromagnetic waves, they travel at the speed of light. Naturally-occurring radio waves are made by lightning, or by …
www.emfnews.org www.emfnews.org www.emfnews.org Dozens of communities are opting out and making smart meters “illegal,” such as in Fairfax County, Ca. where Mayor Lew Tremaine warns: ” . . . the ambient electromagnetic … fields … as a result of having these things at every house running constantly is an unforeseen health risk. For people who are sensitive to electromagnetic radiation, it’s going to be a living nightmare”. I recommend checking the Citizens for Safe Technology website and that of the EM Radiation Health Alliance for more information. We are attempting to counter the misinformation of BC Hydro and the telecommunications industry, by sharing the findings of negative health effects as determined by independent scientists from around the globe. As Dr. Helen Caldicott of ‘If You Love This Planet’ fame stated, radio frequencies “. . .will have deleterious medical effects to people. Babies and children will be particularly sensitive to the mutagenic and carcinogenic effects of the radio frequency radiation.” And as author Dr. Andrew Weil states: “Electromagnetic pollution may be the most significant form of pollution human activity has produced in this century!” Reading the science on the unintended yet destructive side effects of the EM radiation used by wireless technologies leads me to the conclusion that a very wrong turn has been taken here — involving the entire continent — with both the US and Canada committing billions for “interoperable” technologies …
Read MoreWhen people just generally refer to “electromagnetic radiation”, where on the EM spectrum would that be?
Question: When people just generally refer to “electromagnetic radiation”, where on the EM spectrum would that be?
When people just generally refer to “electromagnetic radiation”, like the kind from generators, or cell phones, or whatever, where on the EM spectrum would that be? If I’m not mistaken, all forms of electromagnetic energy are somewhere on the EM spectrum (in fact I believe they could all technically be classified as a type of light, albeit non-visible, even radio waves, as strange as that may seem?).
But when people just mention electromagnetic energy, like from electronics, or power lines, or even an electromagnet itself (say the kind used to pick up cars for compacting at a junkyard) or whatever, they never say where on the EM spectrum that type of electromagnetic energy falls. Is it radio waves? Microwaves maybe? Can anyone help me out here? Anyone know this answer?
@ gintable Yes, I know that, but what I mean is, what is the type of electromagnetic radiation put out by electronics, cell phones, power lines, electromagnets, etc. ?
@ Technobuff Umm….what? Electromagnets don’t emit electromagnetic radiation? Are you sure? That sure doesn’t sound right. Not to be a smartass, but do lightbulbs not emit light, either? O_O
Answer:
Answer by gintable
“electromagnetic radiation” is a GENERAL word for ANY wave type which is the same “stuff as light”.
ANY band of the electromagnetic spectrum.
Read MoreEureka! Episode 30 – Radiation Spectrum
Viewers learn that the waves of heat energy radiated by the sun come in many forms, which together make a band, or spectrum, of energy waves
Read More