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Old Apr 30th 2016, 06:27 PM   #1
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Lightbulb Are there any electromagnetic waves that traverse solid matter, while the photos also

Are there any electromagnetic waves that traverse solid matter, while the photos also get absorbed by electrons. Is there a slight absortion?
.... by some of the photons, when they hit the electrons in the atom, as they pass through say a solid piece of matter.
So with all the waves in the electromagnetic spectrum, that traverse solid matter only,
I just want to know if it is a complete transmission of the electro magnetic waves through the matter, and not even a single photon gets absorbed at all.
Also I think I have heard that if the frequency increases the wavelength, or photons of em waves changes is this correct.
Could this make photons of any em waves that traverse solid matter only, get absorbed by electrons while they are inside the block of matter.
So imagine the waves go into the block, and are half way through the block, the frequency changes to the highest intense range possible while in the block of matter, could the waves change to waves that get absorbed by electrons in the atoms.
I am grateful for your help, anything helps, even a few word
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Old May 23rd 2016, 01:38 AM   #2
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Electromagnetic waves tend to reduce their intensity while passing through solid materials. Which means that some of the photons must be either absorbed or scattered.
An x-ray sound good. If all of the photons made it through then there would simply be a white photo with no details. If none of them passed it through it would be all black.
Only because some get through and some don't do we get an image.
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Old May 28th 2016, 11:06 PM   #3
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Yes

It depends on the frequency and, I think, amplitude to a degree.

Consider radio. You can listen to the radio from inside. Or cell phones. You can use a cell phone inside. Both of these use EM waves. However, some frequencies have more difficulty passing through solid materials - but "pulse modulations" can be used to mimic these frequencies.

You may be interested to read about the "microwave auditory effect" or "bioeffects of microwaves". There is a huge literature on both of these dating back to the 1970s.

In arriving at the solid material, some photons (all EM waves are photons) will pass through, some will reflect, and some will refract - if it hits an electron, some of the energy will be lost and this will be translated to the photon as a lower energy, lower frequency, wave.
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