View Full Version : Well there you go, physics on FaceBook

11-30-2018, 11:17 AM
Kinda strange the topics that come up on Facebook. I don't know much about what we were talking about, mainly just messing with him. I showed my wife my last response and she said I was, and I quote, "an ass"

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) I guess you could say sound is vibration of molecules and eventually the molecules stop vibrating, but wouldn't that violate the law of conservation? The vibration and the movement of the molecules is energy. The law of conservation states that energy can not be destroyed, but only changed. So....what does the energy become that was once vibration? You can't say once we hear it, its gone. As energy can not be destroyed, only changes, and other people further away can hear the sound after you, so, its just one of those thing that make you say....hmmmm.

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) When sound hits your ear it causes your eardrum to vibrate so you hear the sound? Would that be transference of energy? That way a small portion of the energy is transferred to something else. Enough of this and all the energy would be transferred and the "sound" would be gone. Just a thought

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) but the enery that you "hear" has to go somewhere. Also, there are not enough people or animals, or devices to cover the entirety of the planet, to absorb all the waves.

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) the energy of sound is vibrations and vibrations cause friction which causes heat. Heat equals energy. Thus sound vibration is converted to heat energy.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) Chad Smith (https://www.facebook.com/chad.smith.3348?hc_location=ufi) ok, so where does the heat energy go or change to.......it never ends.

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) that is kinda the point, energy is constantly being transferred in some form or fashion from object to object. Energy is never lost, just redirected. The energy you use to pick a guitar string is transferred to the string which in turn transferred to the air via vibrating sound waves producing friction causing the energy to be transferred to heat etc. Never lost just part of an endless cycle.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) What happens to heat once it is released into space?

Heat is released as electromagnetic radiation or, in other words, infared waves. All objects generate electromagnetic radiation. The radiation generated by an object basically depends on its temperature. Warm objects, such as yourself, generate far infared radiation. Far infared means that infared radiation that is far away from the visible light side and near the microwave side.

However, if you really heat an object up to several hundred degrees, it the starts to generate near infared radiation. If you continue heating the object then you will get the following visible light colors in sequence:

dull cherry glow

bright orange glow

white light

bluish white light

And if you still continue heating, most of the energy released will then drift into the ultraviolet

All radiation which leaves the spacecraft eventually becomes part of what is known to astronomers as the background radiation constant. The background radiation constant is average amount of radiation that the universe holds. The background radiation constant can also be seen as the average temperature of the universe. This means that all radiation released eventually becomes part of the background warmth of the universe.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) but that dont make sense either. How can you have heat in space? Since heat is caused by the movement of molecules and space has no molicules

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) I guess its radiation

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) I read through what you just posted and while my name is not Sheldon Cooper, I think that energy doesn't stay there that maybe it is transferred back to use through some of those waves that hit the Earth

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) So, an explosion in space, unless chemical, can't happen and nothing can generate heat to burn a person

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) Isn't space a vacuum? And from what I understand the only way you can have an explosion is if you introduce fuel from another source.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) So, this means without the atmosphere, the sun heat cant be felt. So in space, like on the moon, there is not heat from the sun, only radiation......ouch....my head hurts now.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) Well u cant have traditional fire in space. U can have chemical reations. But they cant generate heat.

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) If you were in space you would feel the heat because the heat is transferred to your "environment". Your body is it's on sealed ecosystem. Right?

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) it cant, there is nothing in space to heat It is neither hot nor cold in space

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) If you are in space it can heat you, your sealed ecosystem

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) Unless.......and here is the biggie.....SPACE IS WATER!

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) The radiation will hit the outer hull and penetrate it, then I am not sure if that radiation would turn to heat in ur enclosed environment, like a ship or space suit. Or would it remain radiation?
so the radiation from the sun can transfer to heat, heating the molecules that make up the space suit or whatever?....perhaps

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) I know u can get radiation burns, but does it actual burn like heat or feel like heat?

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) not sure. I don't know enough physics to answer or even speculate.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) well you can get sunburn, which after time is painful. But while in the sun, you feel just the warmth. You don't actually feel your skin burning like it would in fire. So I suppose radiation does not actually burn where you feel it. You just feel the damage to tissue later.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) So on the moon or in open space, the sun wont burn u by heat
But in time there will be pain as from tissue damage. You wouldnt feel a burn

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) Billy Cross (https://www.facebook.com/billy.cross.733?hc_location=ufi) sunburns do generate heat, energy, and sunburn is a radiation burn so maybe it does burn

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) O am very faired skin. No, I have never "felt" the heat, burning me in real time

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) Only after enough exposure to start damaging the skin

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) You do feel the sun burning your skin while getting a sunburn, the distance is so great you only feel a slight warming. The closer you get the more intense the heat

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) so sunburm.is not a burn in the tradition sense, its radiation damage

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) No, the air is warmed up. The body temp is 98.6. Unless it over 98.6 u dont feel the heat. The heat u do feel has to be radiation.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) It can be cloudy and 100 degrees but u wont get burned.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) That's it...I lost.my mind now

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) You can get sunburned on a cloudy day, you can get sunburned on the moon. Sunburn is radiation Burns and it is heat. Heat=calories=energy. It's all the same

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) Heck, I dont know.

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) In a nuclear blast, what kills people 1st. Shock from blast, heat, or radiation?

Billy Cross (https://www.facebook.com/billy.cross.733?fref=ufi) I should have study physics more

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) I donít know either just some things I have picked up and things I remember from physics classes

Chad Smith (https://www.facebook.com/chad.smith.3348?fref=ufi) I guess that would depend on your location in reference to ground zero. At ground zero the heat from the blast which is caused by the vibrations from the shock wave which produces the radiation.


Paul Pless
11-30-2018, 11:19 AM
was this a sober conversation?

11-30-2018, 11:22 AM
At least on my end it was. Not sure about Billy.


11-30-2018, 01:57 PM

ron ll
11-30-2018, 02:03 PM
Begs the question of whether or not social media is making us smarter or dumber. :D

11-30-2018, 02:09 PM
At least it makes you think, maybe.


11-30-2018, 04:01 PM
Tell him about the heat death of the universe. That will get him going.

George Jung
11-30-2018, 05:14 PM
Please -don't invite 'Billy ' to the forum.

11-30-2018, 05:20 PM
This reminds me of the kind of conversations I used to overhear when I was driving my oldest son and his best friend to and from events when they were in High School. At first, I would try to correct their errors of fact and reason, but then I realized that it was a futile waste of time and effort because facts and reason were not something they were particularly concerned with.