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Microwave ovens emit microwave energy with a wavelength of 12.0 cm What is the energy of exactly one photon of this microwave radiation?
Wiki User
∙ 6y ago
A photon of this wavelength has an energy of about 10 ^ -5 eV.
Wiki User
∙ 6y ago
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How can microwave travell through walls and objects?
We're guessing that you have no trouble listening to the radio in your basement, or watching TV inside in the middle of your house. The so-called "microwaves" are exactly the same physical phenomenon as radio waves and TV waves. Their shorter wavelength means that they suffer more loss when they penetrate material objects, which is why microwave design engineers (ahem ahem) always try to arrange for clear, unobstructed line of sight for microwave communications. But that doesn't mean that any solid material instantly stops microwaves dead. It just means that they can't penetrate quite as far as FM radio and TV can. The above answer is right , but what i meant is what is the Engineering formulla that claculate the penetration of microwave?
Is a microwave radioactive?
No, microwave ovens are not a source of low-level muclear radiation.Microwaves operate by generating microwave electromagnetic radiation. This radiation acts on the contents of the oven and causes what is called dielectric heating. In this process, molecules (primarily water) in the food try to align themselves with the direction of the electromagnetic energy. As the microwave energy is constantly (and very rapidly!) changing is polarization, the molecules will be quickly moved around. This will add energy to the food, and it will appear in the form of thermal energy, or heat. None of this involves nuclear radiation, low-level or otherwise.
What is the wave speed of ultra violet?
Exactly the same as electromagnetic radiation with any other wavelength ... 299,792,458 meters per second in vacuum, somewhat slower in material stuff.
What happens to an electromagnetic wave's frequency as it's wavelength decreases?
The product of (wavelength) x (frequency) of any wave phenomenon is alwaysthe same number ... the speed of the wave. So if wavelength changes, thenfrequency must change by exactly the same factor in the opposite direction,in order for their product to remain constant.
Is red shortest wavelength?
Yes. The longest visible wavelength / lowest visible frequency is the last color you see on the red end of the 'rainbow'. The shortest visible wavelength / highest visible frequency is the last color you see on the violet end of the 'rainbow'. These limits are not exactly the same for every human eye.
Can infra red radiation be used to keep food warm?
Infrared radiation, also commonly known as "heat".
What is meant by microwave engineering?
A: Microwave is a branch of electronics involving very hi frequency whereas the basic of electronics does not follows exactly because of it. Special knowledge is required expertise.
How are microwaves from space detected and what do they tell us about the beginning of the universe?
Microwaves from space can be detected from the use of radio telescopes. Microwaves have been used to test the big bang theory, and this Cosmic Microwave Background (CMB) radiation is a form of microwave that "fills" the universe, that is almost exactly the same in all directions and is not associated with any star or object. The CMB radiation is recognized to be radiation left over from the big bang, or during the early stages of development of the universe.
Can you blowup a phone in the microwave?
You can't exactly blow it up (as in explode) - but you can destroy the circuitry !
Why light rays are considered as electromagnetic waves?
Mainly because that's what they are. Exactly the same physical phenomenon as radio, microwave, heat radiation, ultraviolet, X-rays, and gamma rays, but with wavelengths in the narrow range that your eyes can detect.
What has cosmic microwave background radiation?
The CMBR is microwave radiation coming to our Earth with the same intensity (to within one part in 100,000) from all parts of the sky. Its spectrum is exactly that of a black-body -- ie, like that of a glowing object -- at a temperature 2.7 degrees above absolute zero. It is believed to be the remnant of recombination, 377,000 years after the Big Bang. No other hypothesis about our Universe can explain the CMBR other than saying, "It's just there and I don't know why it should be."
A microwave is halfway between the stove and sink and an electric can opener is halfway between the fridge and sink?
So.... what exactly is the QUESTION !
Could the sun emit radiation of many wavelengths?
Yes, that is EXACTLY what the sun always does.The sun emits a near continuous spectrum from the far infrared through visible light through the far ultraviolet. It also emits some low levels of radio, microwave, x-ray, and gamma radiation.
How can microwave travell through walls and objects?
We're guessing that you have no trouble listening to the radio in your basement, or watching TV inside in the middle of your house. The so-called "microwaves" are exactly the same physical phenomenon as radio waves and TV waves. Their shorter wavelength means that they suffer more loss when they penetrate material objects, which is why microwave design engineers (ahem ahem) always try to arrange for clear, unobstructed line of sight for microwave communications. But that doesn't mean that any solid material instantly stops microwaves dead. It just means that they can't penetrate quite as far as FM radio and TV can. The above answer is right , but what i meant is what is the Engineering formulla that claculate the penetration of microwave?
What is the radiation that was created during the big bang?
Exactly what radiation was created during the big bang is still a matter of debate, and conjecture. However, the radiation that was around only 10 -12 second after the beginning is thought to be well understood. It corresponded to an enormously high temperature, and has been steadily cooling ever since. The current temperature is just below four degrees absolute. This translates to radio noise in the microwave region. This was detected about 50 years ago by two engineers who were trying to do something else. The noise has now been mapped in some detail all over the observable universe. It is referred to as the microwave background radiation.
How long do you put water in a microwave to get it to 175 degrees Fahrenheit?
That's going to depend on the cooking power of the microwave oven, the amount of water, the shape of the container it's in, exactly where inside the oven it's placed, or if the oven has a rotating turntable, the speed at which it rotates.
How does cosmic backround radiation differ from the big bang?
Cosmic microwave background radiation was predicted by Big Bang Cosmology about 16 years before the former was discovered -- by accident. The existence, isotropy, and spectrum of CMBR are all exactly as predicted by BBC, and all alternatives to BBC are reduced to stating, "It's just there and there is absolutely no explanation for it."
