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Electromagnetic Radiation
Electromagnetic (EM) radiation is the energy transmitted through space or a material medium in the form of electromagnetic waves. The frequency range of such waves is tremendous, and is shown by the electromagnetic spectrum. These waves include radio waves, microwaves, infrared waves, visible light waves, ultraviolet (UV) waves, X-rays, and gamma rays.
2,156 Questions
Diamond (which is crystalline carbon). Moissanite is an SiC that challenges diamond in many respects, and since the synthetic version comes off patent in 3 or 4 years, it will be expected to be a much more common material, particularly in larger sizes. It has a higher refractive index than diamond.
Is the balance between incoming radiation and outgoing heat called radiation balance?
Is the equation of incoming and outgoing thermal radiation.
Incoming radiation or solar radiation is called short wave and the radiation emitted from the earths surface and atmosphere (heat radiation) is in the infra -red spectrum and is known as long wave radiation.
Do inferred waves have a longer wavelength then microwaves?
No, they do not. If you look at the electro magnetic spectrum, it portrays all the possible waves lengths. They are are as followed from longest to shortest:
Radio: 103 meters +
Microwaves: 10-2 to 3 meters
Infrared: 10-5 to-2 meters
Visible: 10-6 to -5 meters
Ultraviolet: 10-8 to -6
X-Rays: 10-10 to -8
Gamma Rays: 10-12 to-10
What is the radiation source for visible light waves?
For ordinary purposes, there are two common light mechanisms, Black Body and Spectral Line.
Black body radiation is the kind given off by a heated material - first a dull red glow, followed by red, orange and so on as the heating continues till it reaches white hot (and beyond).
Our incandescent filament light bulb is an example of this.
Spectral lines are given off when a material is energized and an electron jumps from its usual energy level to a higher one. When the material cools enough to allow the electron to drop down to its normal state, it emits a set of spectral lines. These are quite indicative of the element and its energy level. It is this technique that allows us to determine the spectral composition of distant stars, and hence their elemental composition.
LED lights, and similar solid state devices are of this class. As also are more esoteric sources such as the plasma seen in advertising signs.
What does the visible portion of the electromagnetic spectrum fall?
The visible portion of the electromagnetic spectrum falls between ultraviolet (UV) and infrared (IR) radiation. It is the range of wavelengths that humans can perceive with their eyes, typically spanning from approximately 400 to 700 nanometers.
What are some natural sources of ultraviolet light?
the source of ultra violet radiation are due to sunlights, cause by the thinning of ozone layer bcause of the chemical reactions cause by the chemicals from the lithosphere
All cells go through a phase in their development where they are both mobile and in high growth mode. In ontological terms this is known as a malignant stage. Cancer cells (for a variety of reasons) have this phase turned back on again.
How is EM radiation different from alpha and beta radiation?
EM radiation is essentially high energy light, with wavelengths ranging from 10 nanometers low energy x rays to 10 picometers high energy gamma rays. Beta radiation refers to high speed electrons while an alpha ray is a high speed proton.
What is transmitted radiation?
Transmitted radiation refers to the portion of radiation that passes through a material without being absorbed or scattered. This can include various types of radiation such as light, x-rays, or gamma rays. The amount of transmitted radiation depends on the material's composition and thickness.
Is radiation the same as light?
Radiation and light are not the same, but they are related. Light is a form of electromagnetic radiation that is visible to the human eye, while radiation refers to a broader range of electromagnetic waves including visible light, as well as other forms like X-rays and gamma rays.
Is radiation stopped by anything?
It depends on the type of radiation.
Alpha can be stopped with a few inches of air, or even a sheet of paper.
Beta can be stopped with a sheet of metal.
Gamma and neutron takes lead and/or concrete, sometimes several feet.
Neutrinos can hardly be stopped by anything - they travel through the Earth with ease.
Which type of radiation is difficult to stop?
Gamma radiation is difficult to stop because it is the most penetrative type of radiation and can pass through thick barriers such as walls and concrete. Lead and thick layers of dense materials are effective in stopping gamma radiation.
Why does dry air cause more static electricity?
You get a shock when electrons move from a negatively charged surface to a less negatively charged surface. You see a shock then the electrond flow through the air... and ZAP... you feel it too. The electricity has an "easier" time moving though the air when it is dry, so you need less of a charge to get a shock. When there's more moisture in the air, it's tougher! It's the other way around. Moist air conducts electricity better than dry air, so charge bleeds off quickly. When the air is dry, the electrons can hang around on your body for a long time, charging you up to thousands of volts. That can last until you touch something that can conduct them away, like a doorknob or your significant other. Electronics manufacturers have a devil of a time with static jumping onto sensitive parts and damaging them. Electronic assembly areas typically have to keep the humidity above a specified level (maybe 40%) to reduce the charge on the workers.
Mutation radiation refers to radiation that can cause changes in the DNA sequence of an organism, leading to genetic mutations. These mutations can result in changes to an organism's characteristics or traits, which can have various effects on the organism's health and development. Exposure to mutation radiation, such as ionizing radiation, can increase the risk of developing cancer or other health issues.
Solar radiation peaks in energy in the mid-yellow range. Chlorphyll's absorption also peaks in this range. It is a demonstration of the adaption of plants to optimizing their production efficiency.
Can nuclear radiation cause zombies?
No, nuclear radiation cannot cause zombies. Radiation exposure in large amounts can have serious health effects on humans, but it does not possess the ability to reanimate the dead or create fictional creatures like zombies.
What can happen to you when you smell nuclear radiation?
You cannot smell nuclear radiation, nor detect it with any of your senses directly.
However if the nuclear radiation was intense enough (several thousand REM/hour) it is possible that it might ionize the air enough to produce enough ozone that you could smell the ozone (which has a very acrid sour smell). But if it is this intense, not long after you first smelled the ozone you would have already accumulated a dose high enough to have severe radiation poisoning and you could be so sick that you could no longer stand and try to leave the irradiated area. If you did get out you would need intensive care in a well equipped modern hospital to have even a 30% chance of surviving, without hospitalization you would die in no more than a month in indescribable agony.
What will happen if radiation gets on your skin?
it depends. if it was a lot of radiation, it could burn your skin.
Answer:
Radiation comes in multiple types from multiple sources. In fact, skin is our body's primary defense against the forms that we normally encounter every day from a variety of sources, including the sun, electronic devices, the earth itself, etc... If a person is exposed to certain kinds, in high enough doses, or for prolonged periods, it causes burns. A common example is a simple sunburn. In a less common example, this can cause severe burns, blisters and complete disintegration of the skin itself, not to mention the tissue underneath. A larger danger of widespread radiation exposure is to the environment itself, especially food and water, as this bypasses our skin, essentially cooking us from the inside out. This leads to a variety of medical problems including cancer and birth defects.
What are Radiation sensitizers?
Radiation sensitizers are substances that increase the sensitivity of cancer cells to radiation therapy, making the treatment more effective. They can enhance the damaging effects of radiation on cancer cells while minimizing harm to healthy cells, ultimately improving the overall outcome of radiation therapy for cancer patients.
What is intraoperative radiation?
Intraoperative radiation therapy (IORT) is a technique that delivers a concentrated dose of radiation directly to a tumor site during surgery. This helps to target cancer cells more precisely while minimizing radiation exposure to surrounding healthy tissues. IORT can be used in various cancer treatments, including breast, brain, and gastrointestinal cancers.
Does 220-Hertz or 440-Hertz move faster?
220 hertz is faster, because the higher the frequency, the lower the wavelength. The wavelength directly correlates to the speed so therefore the object moving at 220 hertz is significantly faster.
Not quite. The question is not about moving objects but wave speeds.
The formula is velocity = frequency x wavelength, but for any given wave motion through a given medium, its velocity stays constant. Therefore the wavelength is inversely proportional to frequency alone.
So a 220Hz signal travels at the same speed as the 440Hz signal, in the same medium.
How much heat is in 1000 watts?
1000 watts is a measure of power, not heat. Power is the rate at which energy is used or transferred. To determine the amount of heat generated by 1000 watts, additional information about the time over which the power is used or the efficiency of the system is needed.
What parts of the electromagnetic spectrum are you exposed to in a year?
You are exposed to various parts of the electromagnetic spectrum throughout the year. These include visible light, ultraviolet radiation, and some forms of radio frequency radiation. The levels of exposure can vary depending on factors such as the time spent outdoors and proximity to sources like electronic devices.
Can a liquid retain electrical charge?
Yes, liquids can retain electrical charge. When an electric current flows through a liquid, ions can accumulate at the surface of the liquid, creating a charge imbalance. This can result in the liquid retaining an electrical charge.
