Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.physics > #723871

Re: How does a prism divide up colours of white to their perspective sides?

Show all headers | View raw

mitchrae3323@gmail.com writes:

>> > > > No.
>> > > 
>> > > No what? No the speed of light in glass doesn't vary with frequency? No 
>> > > you don't understand? No you want to believe it's a mystery that science 
>> > > can't address, and will not accept any explanation that contradicts that 
>> > > view?
>> > > 
>> > > > 
>> > > > How does it all go to the right place Sylvia?
>> > > > 
>> > > 
>> > > That follows directly from geometry if you accept the varying speed of 
>> > > light with frequency in glass.
>> > > 
>> > > Sylvia.
>> > 
>No. There is already proof in theory that light's constancy of speed
>doesn't slow down. Glass redirects it but it doesn't slow down light.

It most certainly does slow light! That is why c is defined as the
speed of light IN A VACUUM. In anything else, its speed is less.

>If the medium moves faster than light in the same direction 
>the light has to back out. When it reaches the back of the medium
>it has to both stop being slow and remain being slow.
>It can't stick to the back of the faster moving medium.
>Can you disprove that?

The speed of light in the medium is RELATIVE TO THE MEDIUM. If light
goes at 50% of c in a certain glass and a piece of that glass is moving
at 80% of c, the light is moving at 50% of c in the frame where the
glass is stationary. If you want to calculate the speed of the light
relative to the frame where the glass is moving at 80% of c, you have to
use the relativistic speed addition formula (to add 0.80c and 0.50c).

>>   That is exactly false. No extant theory of the propagation of light (including Einstein's) argues that light's velocity in vacuum is the same as in dielectric media.
>> 
>>   The differences are directly measured, you idiot.

>Demonstrate that measurement of moving light outside the atom... how can we How watch propagating light? No. It would have to be known when it was emitted. 
>How do we measure emission?
>We can't measure emission and the direction of it.
>We can't watch light propagate. No machine can see that.
>No eye can...
>It would have to be absorbed. How would science know that?
>How do we know we are dealing with the same given wave?
>That is stored... How do we know absorption happened?
>or emission? We can't watch it move either...

>If you give it a statistical average of speed
>its not the constancy of C.
>How can machines tell you light has absorbed in a particular atom
>or has been emitted by a particular atom? How could they show
>light propagating outside of the atom?

>The eye doesn't know particular light waves. Light has to be stored
>in the atoms of the eye. How can we see light inside those atoms?
>No. Science is the moron that claims it knows what it doesn't.


>>   A flat plate of any transparent material with a refractive index 
>> different from that of the vacuum (that includes all transparent
>> dielectrics) will slow down light that passes through it.

>By what measurement do you know?

Just measure the time it takes light to go from A to B in the medium.
Measure the distance it traveled. As usual, speed is distance/time.

High school level physics.

>No. Science has that wrong...

Just because you don't understand something doesn't mean science is
wrong. It just means you have some learning to do.

Anyway, different wavelengths of light move at slightly different
speeds in glass. Therefore, the glass bends some light more than other,
depending on its wavelength. By doing so, the different colors in white
light get bent differently and the white light becomes a spectrum.

This is physics/optics that has been well known for about two centuries.
More if you go by Newton's work.

Back to sci.physics | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-17 15:00 -0800
  Re: How does a prism divide up colours of white to their perspective sides? Sylvia Else <sylvia@email.invalid> - 2019-01-18 10:53 +1100
    Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-17 16:07 -0800
      Re: How does a prism divide up colours of white to their perspective sides? Sylvia Else <sylvia@email.invalid> - 2019-01-18 12:29 +1100
        Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-17 18:43 -0800
          Re: How does a prism divide up colours of white to their perspective sides? "nuny@bid.nes" <alien8752@gmail.com> - 2019-01-17 20:03 -0800
            Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-17 20:40 -0800
              Re: How does a prism divide up colours of white to their perspective sides? "nuny@bid.nes" <alien8752@gmail.com> - 2019-01-17 21:17 -0800
                Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-18 11:02 -0800
                Re: How does a prism divide up colours of white to their perspective sides? "nuny@bid.nes" <alien8752@gmail.com> - 2019-01-20 02:58 -0800
                Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-20 12:41 -0800
                Re: How does a prism divide up colours of white to their perspective sides? Arindam Banerjee <banerjeeadda1234@gmail.com> - 2019-01-20 14:09 -0800
                Re: How does a prism divide up colours of white to their perspective sides? Odd Bodkin <bodkinodd@gmail.com> - 2019-01-20 23:38 +0000
                Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-20 18:54 -0800
                Re: How does a prism divide up colours of white to their perspective sides? Arindam Banerjee <banerjeeadda1234@gmail.com> - 2019-01-20 20:03 -0800
                Re: How does a prism divide up colours of white to their perspective sides? pnalsing@gmail.com - 2019-01-20 21:05 -0800
                Re: How does a prism divide up colours of white to their perspective sides? Arindam Banerjee <banerjeeadda1234@gmail.com> - 2019-01-20 21:08 -0800
                Re: How does a prism divide up colours of white to their perspective sides? pnalsing@gmail.com - 2019-01-20 21:24 -0800
                Re: How does a prism divide up colours of white to their perspective sides? Arindam Banerjee <banerjeeadda1234@gmail.com> - 2019-01-20 21:31 -0800
                Re: How does a prism divide up colours of white to their perspective sides? pnalsing@gmail.com - 2019-01-20 21:59 -0800
                Re: How does a prism divide up colours of white to their perspective sides? Arindam Banerjee <banerjeeadda1234@gmail.com> - 2019-01-21 03:35 -0800
                Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-21 13:10 -0800
                Re: How does a prism divide up colours of white to their perspective sides? Arindam Banerjee <banerjeeadda1234@gmail.com> - 2019-01-23 15:54 -0800
                Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-20 12:51 -0800
              Re: How does a prism divide up colours of white to their perspective sides? moroney@world.std.spaamtrap.com (Michael Moroney) - 2019-01-19 00:49 +0000
            Re: How does a prism divide up colours of white to their perspective sides? Sergi o <invaliid@invalid.com> - 2019-01-18 15:28 -0600
            Re: How does a prism divide up colours of white to their perspective sides? "reber G=emc^2" <herbertglazier0@gmail.com> - 2019-01-23 15:30 -0800
              Re: How does a prism divide up colours of white to their perspective sides? benj <benj.fake@gmail.com> - 2019-01-24 03:35 -0500
          Re: How does a prism divide up colours of white to their perspective sides? Sylvia Else <sylvia@email.invalid> - 2019-01-18 16:06 +1100
            Re: How does a prism divide up colours of white to their perspective sides? Sergi o <invaliid@invalid.com> - 2019-01-18 10:02 -0600
      Re: How does a prism divide up colours of white to their perspective sides? Sergi o <invaliid@invalid.com> - 2019-01-18 14:12 -0600
        Re: How does a prism divide up colours of white to their perspective sides? Leo Sgouros <adravirgo@gmail.com> - 2019-01-18 12:18 -0800
          Re: How does a prism divide up colours of white to their perspective sides? Sergi o <invaliid@invalid.com> - 2019-01-18 15:26 -0600
            Re: How does a prism divide up colours of white to their perspective sides? benj <benj.fake@gmail.com> - 2019-01-18 17:25 -0500
              Re: How does a prism divide up colours of white to their perspective sides? Sergi o <invaliid@invalid.com> - 2019-01-18 17:24 -0600
        Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-18 15:09 -0800
  Re: How does a prism divide up colours of white to their perspective sides? Alan Folmsbee <omnilobe@gmail.com> - 2019-01-17 18:11 -0800
  Re: How does a prism divide up colours of white to their perspective sides? pnalsing@gmail.com - 2019-01-17 19:10 -0800
    Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-17 20:16 -0800
      Re: How does a prism divide up colours of white to their perspective sides? Sergi o <invaliid@invalid.com> - 2019-01-18 10:07 -0600
  Re: How does a prism divide up colours of white to their perspective sides? Arindam Banerjee <banerjeeadda1234@gmail.com> - 2019-01-19 00:05 -0800
    Re: How does a prism divide up colours of white to their perspective sides? mitchrae3323@gmail.com - 2019-01-19 16:15 -0800
      Re: How does a prism divide up colours of white to their perspective sides? Arindam Banerjee <banerjeeadda1234@gmail.com> - 2019-01-19 21:52 -0800

csiph-web