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Physics, Astronomy & Cosmology / Re: How does Heat Relate to Gravity?

« on: 11/06/2017 00:33:54 »

Hot air is less dense than cold air, that is why it rises above cold air. You could also see it as cold air sinking and displacing the hot air below it.

Ye . that i know. But thats not the heat behaving . This is heated air opposed to cooled air. I want to know what happens at the smallest level of molecules when heat travels from one place to another. what partical is doing that. Does it have mass . Can it be slowed down or accelerated by gravity . Thats my area of darkness that i would like to see luminated so to speak 

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Physics, Astronomy & Cosmology / How does Heat Relate to Gravity?

« on: 10/06/2017 22:56:22 »

How exactly does heat radiation/transferral relate to gravity?  At the surface it seems to be , cuz in general we say heat rises but my gut says otherwise that it's not related at all.
Who can explain the details of this 'process' at molecular level?

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Geek Speak / Re: How do you stream video?

« on: 06/04/2016 14:50:08 »

Besides U-tube there's lots to find about podcast services on the net.
take an afternoon to explore.

search words\:  podcast mediastreaming silverlight flash shockwave plugin etc.

also there's the possibility to embedd a video on your website that users can access through a plugin on their side.
like silverlight . flash etc.
 lotsa things possible . but it needs study to deploy. no easy 'how to'i;m afraid . but if you're above average smart , it won't be a major problem

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Physics, Astronomy & Cosmology / Re: Why do photons have the same speed regardless of the velocity of their source?

« on: 22/03/2016 18:18:56 »

Guy's
All your chatter about dopler dazzles me but . . .
it seems to me that only aplies to interaction between fotons emmited in a row one after another when emmited from moving source or observed by moving source. i wanted to keep the question simple by observing just the ONE photon and its behaviour when emmited form a source.

But hey. it's still very enlightning to follow your guys arguements
.

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Physics, Astronomy & Cosmology / Re: Why do photons have the same speed regardless of the velocity of their source?

« on: 20/03/2016 12:49:14 »

Tnx colin,

It took some time of letting go of this mater to get a 'flash' of insight. I now understand why doppler doesn't apply to lightsourses that move.

It's simple really. The moment a photon leaves its source it starts traveling at lightspeed and because relative to this lightspeed  this source is a point of origin that sits  still  and is actually static because the emmited photons speed is already the maximum and constant. there's is no acceleration. light emmision is instant. and there lies the clue.
i think.

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Physics, Astronomy & Cosmology / Re: Why do photons emmited from a moving source and a static source have same speed

« on: 11/03/2016 20:44:03 »

Tnx Colin,

The theories and comparison of light and sound , and the doppler effect when soundsourses(or receivers) move were allready known to me.

I'm simply(well , not simple at all, but as a figure of speech) trying to understand why lightspeed is a fixed given absolute limit when it comes to moving through space.
Nothing can move faster (according to einsteins and other theories) and i want to know what it is that makes everything hold up to this fact.
As you said, in space is nothing that can 'vibrate' (or be modulated) but still a lightsource does do exactly that. Light is indeed a 'movement' in a particular frequency and amplitude but what it is what 'vibrates' and gets 'modulated' to transport the properties of light so it becomes visible at every distance from the emiting source blows my mind. simply cannot figure it out.
I must remind everyone here that i am no scientist or not even a student. i only found this matter interesting all of my life but always got put off by loads of 'shop talk'i cannot grasp.

Tnx for your attempt.
 
 

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Physics, Astronomy & Cosmology / Re: Why do photons emmited from a moving source and a static source have same speed

« on: 11/03/2016 02:08:37 »

hmm.
I'm not any closer to understanding this and get the relativity between spacetime and light.

In my example i was not traveling at any speed . simply observing a photon reachin me from a static fixed point(lets say our sun) and a photon reachin me from a towards me moving object(lets say a meteorite like object reflecting or emmiting a foton towards me while the object travels at half the speed of light)

i cannot see how both photons have the same speed unless the  one emmited from the moving meteorite was somehow slowed down by something.
Anyway , tnx for the answer , you gave me some more background that i didn't have before

All in all i could be looking at this all wrong maybe.

A photos is a partical moving in space and time . Maybe the properties of space and time just simply don't alow for faster
travel. or movement. Or maybe it isn't moving at al because it's proppelled towards me but maybe i'm atracting it towards me instead and it really is a matter of perceptual dynamics.

I need more coffee...

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Physics, Astronomy & Cosmology / Why do photons have the same speed regardless of the velocity of their source?

« on: 10/03/2016 19:24:55 »

I learned that light travels at the same given speed no matter if a light source is static in a fixed place or the source is moving towards you in that same space.

What is it that decelarates a photon that is emitted from an object moving toward you with say half the speed of light to come back to exactly the fixed speed of light.

in other words, the photon would leave the lightsource at half the speed of light in order to arive at your position with the exact lightspeed , or am i seeing this wrong?

So 'something' must slow it down otherwise it would arive at one and a half times lightspeed.
What is this 'something'?