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General Interest > Philosophy, Sociology & Psychology
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Re: Albert Einstein [Re: TODAY]
    #3476837 -

i thought all things had mass...even energy has mass...so wtf is light? if you aren't mass or energy, what's left?

You are definitely on the right track! It isn't that energy "has" mass, mass and energy are two aspects of the same thing. They are interchangeable.

Light has energy, but not "mass", though because the two are interchangeable light acts as if it has mass (in a way).


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Albert Einstein [Re: trendal]
    #3477172 -

Note to readers: Swami will either refuse to respond to this, or will fire off a one-liner to pass over the issue.

Renote to readers: Trendal expects me to act differntly than the average poster and yet complains that I am abusive when I point out this frequent non-responsiveness.

Photons may not have mass...

Momentum = mass * velocity. What happens when we multiply a number times zero?


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The proof is in the pudding.

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Re: Albert Einstein [Re: Swami]
    #3477190 -

Momentum = mass * velocity. What happens when we multiply a number times zero?

And, as I already pointed out, mass = energy / c^2

Go look it up, if you don't agree with me. I already did.


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Albert Einstein [Re: trendal]
    #3477286 -

Here is a quote from a physics website which only adds to the confusion:

"Photons, the tiny packets that make up light, do not have mass. However, they do have momentum, even though we learn in physics class that an object's momentum is proportional to its mass."


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The proof is in the pudding.

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Re: Albert Einstein [Re: Swami]
    #3477438 -

Quote:
...one could say that a "tree" does not exist because it is merely a mental construct; a snapshot of a process. While this is "true" in some sense, time is no more nor less a construct than a tree.


I agree with you here.

Quote:
If we followed your point to it's ultimate natural conclusion, NO communication beyond hand signs or grunts would be possible.


I'm not saying that we should stop working within the frameworks or models that we do. Not at all. Your argument is similar to the response by hardcore freewillers to determinists-"...are you saying that you did not choose to type that message?" Just because I employ the model that I acknowledge as limited doesn't discredit my position. But I acknowledge that it is limited, that it is making unverifiable assumptions and thus it is not the Truth that all hardcore scientist-materialist-types advertise it as.

And this is not mere wordplay. Show me my fallacy and I will graciously conceed.


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Concepts which have been proved to be useful in ordering things easily acquire such an authority over us that we forget their human origins and accept them as invariable.- Albert Einstein

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Re: Albert Einstein [Re: Swami]
    #3478256 -

Here is a quote from a physics website which only adds to the confusion

What confusion? That quote simply proves exactly what I was saying: photons do not have mass, but they do have momentum.


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Albert Einstein [Re: trendal]
    #3478456 -

If Albert Einstein were here I think he would agree with you.


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"A warrior is a hunter. He calculates everything. That's control. Once his calculations are over, he acts. He lets go. That's abandon. A warrior is not a leaf at the mercy of the wind. No one can push him; no one can make him do things against himself or against his better judgment. A warrior is tuned to survive, and he survives in the best of all possible fashions." ― Carlos Castaneda

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Re: Albert Einstein [Re: Huehuecoyotl]
    #3478474 -

I think I'm going to go smoke a bowl in Al's honour.  :bong:


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

Extras: Filter Print Post Top
Re: Albert Einstein [Re: trendal]
    #3478496 -

I'm sorry, but I love that phrase. You can substantiate anything with it. If I ever get thrown in jail (again) I'll have to use that one in court.


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"A warrior is a hunter. He calculates everything. That's control. Once his calculations are over, he acts. He lets go. That's abandon. A warrior is not a leaf at the mercy of the wind. No one can push him; no one can make him do things against himself or against his better judgment. A warrior is tuned to survive, and he survives in the best of all possible fashions." ― Carlos Castaneda

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Re: Albert Einstein [Re: trendal]
    #3478859 -

What confusion?

"...an object's momentum is proportional to its mass."

I know you know what proportional means.


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The proof is in the pudding.

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Re: Albert Einstein [Re: Swami]
    #3478955 -

And this part?
"However, they do have momentum,"

I know you understand math:

Energy/Mass:
E = m * c^2
m = E / c^2

Energy of a photon: (h=plank's constant, f=frequency)
E = h * f

Momentum:
p = m * v

Momentum of a photon:
p = m * v
= (E / c^2) * v
= ((h * f) / c^2) * v
= ((h * f) / c^2) * c
p = (h * f) / c


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Albert Einstein [Re: trendal]
    #3480542 -

don't fuck with trendal, he pushes out so much math that you'd be a fool to contradict. plus he makes sense. k+


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ca'rouse (k-rouz)
intr.v.
To engage in boisterous, drunken merrymaking.

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Re: Albert Einstein [Re: Swami]
    #3480670 -

= ((h * f) / c^2) * v
= ((h * f) / c^2) * c

is c the speed of light? i'm not so keen on my mathematics, lol.


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/opinion
.sean

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Re: Albert Einstein [Re: entiformatie]
    #3480807 -

yes! c is the speed of light. c = 300,000 km/s

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Re: Albert Einstein [Re: TODAY]
    #3480858 -

TODAY said:
if you were travelling the speed of light and then turned a light on, wouldn't the light from the vessel moving at the speed of light be able to travel faster than the initial speed of light?...you know, something about relativity or something.


You can never travel at the speed of light according to Einstein. But you could, in theory, travel with 95% of light speed. If you travel with 95% of light speed and turned a light on, you'll see the light still traveling with light speed. In all directions. Someone standing still would also see light traveling with light speed, and not with 195% of light speed. Light always travels with light speed. This is really weird. You should fall of your chair if you fully understand what I said  :smirk:

Time and distance are different for objects that move relative to each other.

Light does travel through space with max speed(light speed) and THEREFOR it does not travel through time. If you don't move, you travel with max 'speed' through time and with min speed through space. If you start moving, you travel through space and THEREFOR you travel slower through time.

We don't experience this in daily life because our speeds never come close to light speed, but this effect is still all around us. Your clock will tick slower if you start moving. The faster you go, the slower your clock will tick and it will finally stop ticking if you could reach light speed.

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Re: Albert Einstein [Re: Swami]
    #3480880 -

Swami said:
No, photons have no mass and therefore no mometum.


That's what Newton would have said. Einstein would say what Trendal said.

Two real life examples of the momentum of photons: Satellites drift out of their orbit because of photons hitting the satellite.

A space ship can reach very high velocities(very low acceleration over a very long time) by only using the momentum of photons.

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