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What kind of material can radio waves penetrate that light waves cannot?
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Why can radio waves pass through walls but light cannot?
Radio waves are longer on the electromagnetic spectrum and can penetrate objects because they are less dense. Visible light and infrared light are shorter and therefore too dense to pass through objects.
Why can radio telescope can see things that a telescope that detect visible light cant?
-- The source may be one that emits electromagnetic energy in the radio portion of the spectrum but little or no visible light. -- There may be material in the way, such as dust or gas, that absorbs visible light but doesn't absorb radio energy.
What is the penetration of radio waves?
I think the radio waves penetrate according to the barrier leakage or tunneling as explained by quantum mechanics.
Why do radio waves diffract around building's while light waves do not?
Light waves do diffract, but the effect is very very small. In general diffraction effects are important when the object interacting with the wave has dimensions that are comparable to the wavelength of the wave. Light waves have much shorter wavelength compared to the radio waves. Hence the effect. (It should also be noted that radio waves penetrate buildings much better than light waves, but that leads to a more nuanced discussion of diffraction effects.)
What is the radio wave speed range for visible light?
There's no 'range'. The speed of any electromagnetic signal, including light, is 299,792,458 meters (186,282 miles) per second in vacuum, somewhat slower in any material, depending on the material, regardless of wavelength.
What can radio waves do that visible light cannot?
Electromagnetic waves can travel through a vacuum.
Why can radio waves pass through walls but light cannot?
Radio waves are longer on the electromagnetic spectrum and can penetrate objects because they are less dense. Visible light and infrared light are shorter and therefore too dense to pass through objects.
Neither X rays nor radio waves can penetrate the earth's atmosphere?
False. For some bands of radio waves the atmosphere is transparent. Radio waves can penetrate to the ground. That's why we have radio telescopes on the Earth.
Why can radio telescopes be used 24 hours a day?
Unlike visible light waves, radio waves can penetrate through clouds.
What is the frequency range of radio waves that can penetrate human body?
The frequency range that the radio waves can penetrate the human body is between 1Hz and 10 KHz. This frequency of the radio waves is however not dangerous.
What property of ultrasound waves allows them to penetrate inside the body?
The property of any waves - sound waves, radio waves (including light waves) - that allow them to penetrate is their frequency, relative to the absorption frequency of the material you want them to penetrate. If you have a material which resonates at a range of frequencies from 30kHz - 60KHz, for example, and you direct your sound wave of 40kHz at it, the molecules in the material will absorb a lot of the energy of the wave. It''s like pushing a child on a swing at the correct (resonant) frequency to get the child swinging. Essentially, you are converting the energy of your sound in to heat in the material, and the sound wave does not penetrate; it gets absorbed. At much higher or lower frequencies (a few Hz or 100's kHz) the material is unable to react to the waves (it's like pushing the child on a swing 100,000 times a second. The child won't swing, she'll just jiggle very slightly, absorbing almost no energy) The energy is not absorbed by the molecules in the material, and passes through, penetrating deeper in to the material.
Is it possible for a electomagnetic wave to travel through matter?
No. Light cannot pass through glass or water. Light bulbs do not shine, and flashlights are a myth. The presence of air alone is enough to totally block the passage of heat, such as from a fireplace or heat lamp. Not only that! Radio waves cannot penetrate walls ... the reason why radios, TVs, and cellphones are completely useless inside the walls of a home. Finally, X-rays are totally blocked by the presence of tooth enamel or human skin, and microwave radiation is utterly unable to penetrate leftover meatloaf, and it bounces off harmlessly.
Why can radio telescope can see things that a telescope that detect visible light cant?
-- The source may be one that emits electromagnetic energy in the radio portion of the spectrum but little or no visible light. -- There may be material in the way, such as dust or gas, that absorbs visible light but doesn't absorb radio energy.
What is the penetration of radio waves?
I think the radio waves penetrate according to the barrier leakage or tunneling as explained by quantum mechanics.
What instrument uses radio waves to penetrate gas and dust of the universe?
stop
Why does radio wave travel through walls and a light wave cannot?
Electromagnetic waves with higher frequencies (longer wavelengths) are absorbed more efficiently by material objects, so have shallower effective penetration. Radio waves range in wavelength between roughly 0.001 - 3,000 meters. Visible light waves range in wavelength between roughly 0.0000004 - 0.0000007 meters.
What instrument can penetrate the gas and dust of the universe?
Infrared, radio and x-ray telescopes.
