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When a microwave is off and a PC is disconnected from wifi does the both still give off radiation?
Wiki User
∙ 11y ago
When the microwave oven isn't running, it's not radiating anything.
When the PC is on, it's monitoring the presence of the WiFi signal, ready
to connect when you want it to. Even when you're not connected, you
can see a little icon at the bottom of the screen that tells you that there
is a WiFi signal available.
Wiki User
∙ 11y ago
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Radio wave frequency and microwave radiation are both forms of energy called electromagnetic radiation?
The answer is yes.
How do microwave ovens allow light to escape but not microwaves?
Both visible light and microwave radiation are different variations of the same electromagnetic energy. Visible light has infinitesimally small wavelengths, and therefore it can pass through the screen holes. Microwave radiation has much larger wavelengths, and these wavelengths are too big to "fit" through the screen holes, and therefore the screen appears solid to the microwave radiation. The microwave radiation is therefore completely reflected by the screen.
What is the difference between waves used in microwave ovens and nuclear radiation?
Both microwave radiation and nuclear electromagnetic radiation are members of the same species, but they're as different as babies are from elephants, to wit, microwaves are much, much less powerful than nuclear electromagnetic radiation. Microwave radiation, for instance, makes atoms shift their position (and magnetic fields) very, very quickly. Now the definition of heat is "movement," so the faster anything moves, the "hotter" we say it is. Ergo, something placed in a microwave-radiation-field becomes noticeably "hotter." But comparing microwave and nuclear electromagnetic radiation is like comparing a face-slap to a 20-ton BOMB. Nuclear radiation comes from atomic nuclei, so "nuclear radiation" can strike, penetrate, damage, and even destroy atoms in their path. Big difference, capiche? Huge.We left out the part about nuclear particulate radiation. There is no comparison there. Additionally, nuclear electromagnetic radiation is ionizing radiation while microwave radiation is not.
How are microwaves transmitted?
Microwaves are electromagnetic radiation. They are electromagnetic waves, and they are transmitted like light or radio waves, both of which are forms of electromagnetic radiation. The radiation leaves the microwave source in waves, and this radiation will travel effortlessly through a vacuum, and with a bit of loss through air.
When you cook food in a microwave oven why doesn't the plate get get cooked?
Plates are usually either ceramic or glass. Both materials are transparent to the microwave radiation in a microwave oven. The electromagnetic energy goes right through the plates like they weren't there. It is the food that heats the plate as that food is being heated. Remember that the microwave radiation is "tuned" to work on the hydrogen-oxygen bonds in water. It gives them "energy" and heats them up. There are some plates that will actually get a bit hot directly from the microwave energy, but that depends on the composition of the plate.
When you cook food in a microwave oven why doesn't the plate get cooked?
Plates are usually either ceramic or glass. Both materials are transparent to the microwave radiation in a microwave oven. The electromagnetic energy goes right through the plates like they weren't there. It is the food that heats the plate as that food is being heated. Remember that the microwave radiation is "tuned" to work on the hydrogen-oxygen bonds in water. It gives them "energy" and heats them up. There are some plates that will actually get a bit hot directly from the microwave energy, but that depends on the composition of the plate.
Why is your disconnected heater core still leaking?
There may have been some water left in the heater core when you disconnected both hoses at the firewall. I can't think of any other explanation since there is no water circulating through the heater core.
What does a microwave do?
A microwave fuse does what any fuse does. It protects both the microwave and the building's electrical from surges and short-outs.
Does a microwave use radiant energy?
Both microwave radio transmitters and microwave ovens generate and pour out radiant energy.
What does a microwave fuse do?
A microwave fuse does what any fuse does. It protects both the microwave and the building's electrical from surges and short-outs.
Does artificial light travel as fast as natural light?
The radiation that a laser emits ... whether it's visible light, infrared, or microwave, has all the same physical characteristics as electromagnetic radiation from other sources has, including speed.
How does a microwave work?
A microwave oven heats food in a process called dielectric heating. The molecules in the food, primarily water molecules, are polar molecules - meaning they have both a positive and a negative pole due to the distribution of positive and negative charges on the atoms. When they are subjected to microwaves, the molecules rotate as to align themselves with the electromagnetic field, much like a compass aligning itself with the magnetic field of the Earth. Microwave ovens alternate the electromagnetic field to reverse the polarity, causing the molecules to then rotate the other way. Using the compass analogy, imagine taking a magnet and doing circles around the compass; the needle goes crazy. This excited rotation of (mostly) water molecules generates molecular friction with other surrounding excited molecules, generating heat.A common misconception is that the molecules have resonance with the particular frequency used by a microwave oven; ovens that use different frequencies can cook just as efficiently. Another misconception regards the safety of microwave ovens and their radiation. The radiation used in a microwave oven is in the form of radio waves; this is non-ionizing radiation, meaning it is not the same kind of radiation that can cause cancer; that kind of radiation is called ionizing radiation - sunlight and nuclear radiation are examples. Therefore, a microwave oven's radiation cannot cause cancer or other ionizing effects. It's also commonly believed that standing too close to a microwave oven can be harmful, but this is not true. A microwave oven acts like a Faraday cage; the holes in the metal grill that's visible through the oven door are essentially invisible to the radio waves, thanks to their wavelength, so most of the energy is reflected back into the oven. Other sources of microwave radiation, such as cell phones, cannot heat objects like a microwave for two reasons: The relative power of the transmission, and the fact that a microwave oven concentrates nearly all of the energy into the food, whereas a cell phone's transmissions dissipate in all directions, leaving the tiniest fractions of that energy to be absorbed by the body.It heats up and thaws the food that you have placed in the microwave
