Nuclear Physics

I have been told that FE do not accept nuclear physics.

How does your smoke detector work?  Now, some of you have a photoelectric smoke detector.  This works fine without employing nuclear physics.  The rest of you must explain, that if Amercium-241 cannot decay, then how does your smoke alarm detect smoke.

Here's another fun one.  How do MRI work?  Again, kinda difficult to explain without nuclear physics.

Carbon-14 dating?

Geiger counters?

Electron Capture Devices?

Nuclear powerplants?

Nuclear weapons?

Radiation poisoning?

Stars (including the sun)?  Please explain the spectrum of sunlight as well.  Again, nuclear physics does a pretty bitchin job at explaing all of the above.

What?  Who doesn't believe in nuclear physics?

What?  Who doesn't believe in nuclear physics?

So, then nuclear does fusion occurs at the center of the FE model sun as well?

Quote from: "TheEngineer"

What?  Who doesn't believe in nuclear physics?

So, then nuclear does fusion occurs at the center of the FE model sun as well?

The sun's not big enough.

So where does the Sun's light come from in FE?

So where does the Sun's light come from in FE?

Considering how the apostrophe-s is the signal for possession in English, I'd say the sun.

I think Pez meant "How does the sun generate its light?"

Quote from: "il0vepez"

So where does the Sun's light come from in FE?

Considering how the apostrophe-s is the signal for possession in English, I'd say the sun.

Ok, ass.  In the Flat Earth hypothesis, what mechanism generates electromagnetic radiation from the Sun's surface?

Quote from: "BOGWarrior89"

Quote from: "il0vepez"

So where does the Sun's light come from in FE?

Considering how the apostrophe-s is the signal for possession in English, I'd say the sun.

Ok, ass.  In the Flat Earth hypothesis, what mechanism generates electromagnetic radiation from the Sun's surface?

Electromagnetism would be my guess.

Quote from: "il0vepez"

Quote from: "BOGWarrior89"

Quote from: "il0vepez"

So where does the Sun's light come from in FE?

Considering how the apostrophe-s is the signal for possession in English, I'd say the sun.

Ok, ass.  In the Flat Earth hypothesis, what mechanism generates electromagnetic radiation from the Sun's surface?

Electromagnetism would be my guess.

Electromagnetism generates electromagnetism, how?

Mechanism: the agency or means by which an effect is produced or a purpose is accomplished.

If you have absolutely nothing to contribute, then please shut the hell up.

Quote from: "BOGWarrior89"

Quote from: "il0vepez"

Quote from: "BOGWarrior89"

Quote from: "il0vepez"

So where does the Sun's light come from in FE?

Considering how the apostrophe-s is the signal for possession in English, I'd say the sun.

Ok, ass.  In the Flat Earth hypothesis, what mechanism generates electromagnetic radiation from the Sun's surface?

Electromagnetism would be my guess.

Electromagnetism generates electromagnetism, how?

Mechanism: the agency or means by which an effect is produced or a purpose is accomplished.

If you have absolutely nothing to contribute, then please shut the hell up.

Read his avatar. Gosh.
"I thought we were having a state the obvious contest"

Quote from: "BOGWarrior89"

Quote from: "il0vepez"

Quote from: "BOGWarrior89"

Quote from: "il0vepez"

So where does the Sun's light come from in FE?

Considering how the apostrophe-s is the signal for possession in English, I'd say the sun.

Ok, ass.  In the Flat Earth hypothesis, what mechanism generates electromagnetic radiation from the Sun's surface?

Electromagnetism would be my guess.

Electromagnetism generates electromagnetism, how?

Mechanism: the agency or means by which an effect is produced or a purpose is accomplished.

If you have absolutely nothing to contribute, then please shut the hell up.

No, electromagnetism generates electromagnetic radiation.

It's quite simple, really; electromagnetism -> electromagnetic interaction -> electromagnetic radiation.

Read his avatar. Gosh.
"I thought we were having a state the obvious contest"

BOG, I do not believe you are serious.  Your reply is not helpful.  Please stop posting on this thread.

BOG, I do not believe you are serious.

If I said I was serious, I'm sorry, I must have been impersonating him, for I am BOGWarrior89.

Your reply is not helpful.  Please stop posting on this thread.

I am being helpful; sunlight comes from the sun, and it's too small for nuclear fusion, so it operates like a spotlight.  It's not my fault you didn't read the FAQ.

If I said I was serious, I'm sorry, I must have been impersonating him, for I am BOGWarrior89.

Does the 89 make you 17-18 years old, or is it just something different?

Your fucking stupid, stop posting.

Quote

If I said I was serious, I'm sorry, I must have been impersonating him, for I am BOGWarrior89.

Does the 89 make you 17-18 years old, or is it just something different?

OMFG how do you know me?  Stalker!

Quote from: "il0vepez"

BOG, I do not believe you are serious.

If I said I was serious, I'm sorry, I must have been impersonating him, for I am BOGWarrior89.

Quote from: "il0vepez"

Your reply is not helpful.  Please stop posting on this thread.

I am being helpful; sunlight comes from the sun, and it's too small for nuclear fusion, so it operates like a spotlight.  It's not my fault you didn't read the FAQ.

Like a halogen spotlight?  So, is it 220V or 440V?

Too small?  So why don't we find nuclear fusion inside a nebulae?  I think you mean, the internal energy of the system is too low.  The question is then, why is the internal energy of the system too low?

So where does the Sun's light come from in FE?

The sun is still quite massive, and does contract over time under its own weight.  The material near the surface of the sun has a certain gravitational potential energy, due to its distance from the centre.  Some of this energy is used in moving that material towards the sun's core, but the process is not perfectly efficient (due to the fact that the sun is not an ideal gas: the molecules collide), and large amounts of it are radiated out as heat and light.

gravitational potential energy

à
Could you elaborate on that?

Quote

gravitational potential energy

à
Could you elaborate on that?

Energy is a numerical description of an object in a dynamical field that is conserved -- it does not change over time.  Some objects emit a gravitational field, or are accelerating and therefore can be treated mathematically as though they emitted a gravitational field, if doing so is convenient.  The sun is just such an object.

Gravity is a force, or can be treated as such, and therefore objects in the field are caused to accelerate.  That is, their velocities are caused to change.  One aspect of an object's energy is its kinetic energy, which changes with the velocity of the object.  Assuming there are no other forces acting on an object, the only other aspect of the object's energy is its "potential" energy, which is energy that it has by virtue of its position in the gravitational field.

Energy must be conserved, but its form can change.  Gravitational potential energy and kinetic energy can be converted to one another.  As an object loses gravitational potential energy, in an ideal system, all the potential energy is converted to kinetic energy.  In real systems, this is not the case, and some energy is lost as heat or light.

The salient point is that objects in gravitational fields, or in regions of space in which it is convenient to say that there is a gravitational field, have a "potential" energy related to their position in the field.  Objects accelerate against the gradient of this potential.

Quote from: "il0vepez"

So where does the Sun's light come from in FE?

The sun is still quite massive, and does contract over time under its own weight.  The material near the surface of the sun has a certain gravitational potential energy, due to its distance from the centre.  Some of this energy is used in moving that material towards the sun's core, but the process is not perfectly efficient (due to the fact that the sun is not an ideal gas: the molecules collide), and large amounts of it are radiated out as heat and light.

No where did you answer the question that you quoted.  Covenction currents within a viscous fluid is not a model for the generation of 5700K .  Where does the light come from?  By what mechanism?  Are you saying the light is solely from the heat of friction?

Also, which molecules?

Energy is a numerical description of an object in a dynamical field that is conserved -- it does not change over time.  Some objects emit a gravitational field, or are accelerating and therefore can be treated mathematically as though they emitted a gravitational field, if doing so is convenient.  The sun is just such an object.

Gravity is a force, or can be treated as such, and therefore objects in the field are caused to accelerate.  That is, their velocities are caused to change.  One aspect of an object's energy is its kinetic energy, which changes with the velocity of the object.  Assuming there are no other forces acting on an object, the only other aspect of the object's energy is its "potential" energy, which is energy that it has by virtue of its position in the gravitational field.

Energy must be conserved, but its form can change.  Gravitational potential energy and kinetic energy can be converted to one another.  As an object loses gravitational potential energy, in an ideal system, all the potential energy is converted to kinetic energy.  In real systems, this is not the case, and some energy is lost as heat or light.

The salient point is that objects in gravitational fields, or in regions of space in which it is convenient to say that there is a gravitational field, have a "potential" energy related to their position in the field.  Objects accelerate against the gradient of this potential.

I will say that this effect is real, and has been measured.  The planets Jupiter and Saturn for example have been observed to emit slight amounts of heat due to their slow gravitational collapse.

But the idea that the sun is powered by a gravitational collapse was abandoned back in the 1800's.

It was abandoned for two major reasons.  First, if the sun was powered by gravitational collapse alone, it could only be a few thousand years old, which does not mesh with our current understanding of the universe.

Second, it was the discovered that the core of the sun emits neutrinos.  Neutrinos are known products of nuclear fusion, and there are few other known processes that generate them.

It is now accepted that while some objects do emit a small amount of energy from gravitational collapse, this is not the primary mechanism that powers the sun, and anyone who tells you otherwise is stuck in the 1800's.

... and anyone who tells you otherwise is stuck in the 1800's.

Well, if you mean 1800's BC, then welcome to the forum!

Second, it was the discovered that the core of the sun emits neutrinos.  Neutrinos are known products of nuclear fusion, and there are few other known processes that generate them.

Actually some forms of radioactive decay produce neutrinos or in nuclear fission, thats how we can observe them on Earth, they are actually quite common, but incredibly difficult to detect due to their miniscule mass, but are detectable. They form from the decay of a nutron into a proton and electon, which is a very common form of radioactive decay (Beta-Decay).

Quote from: "phaseshifter"

Quote

gravitational potential energy

à
Could you elaborate on that?

Energy is a numerical description of an object in a dynamical field that is conserved -- it does not change over time.  Some objects emit a gravitational field, or are accelerating and therefore can be treated mathematically as though they emitted a gravitational field, if doing so is convenient.  The sun is just such an object.

Gravity is a force, or can be treated as such, and therefore objects in the field are caused to accelerate.  That is, their velocities are caused to change.  One aspect of an object's energy is its kinetic energy, which changes with the velocity of the object.  Assuming there are no other forces acting on an object, the only other aspect of the object's energy is its "potential" energy, which is energy that it has by virtue of its position in the gravitational field.

Energy must be conserved, but its form can change.  Gravitational potential energy and kinetic energy can be converted to one another.  As an object loses gravitational potential energy, in an ideal system, all the potential energy is converted to kinetic energy.  In real systems, this is not the case, and some energy is lost as heat or light.

The salient point is that objects in gravitational fields, or in regions of space in which it is convenient to say that there is a gravitational field, have a "potential" energy related to their position in the field.  Objects accelerate against the gradient of this potential.

Ok, but the amount of heat produced by the "creation"  (tranformation) of Kinetic energy is rather small. The Sun doesn't seem to be in a situation where creating the amount of heat we receive from it would be possible.

Besides, how did you determine the strenght of the sun's gravitational field?