Posted by
timothy
on from the yes-those-are-real-words dept.
bofh31337 writes: "Nature has an interesting story about the Lasetron. In theory, creating very short flashes of light, using high-powered lasers, you would be able to see inside atomic nuclei."
Hey... that's how these things start. I just hope they formalize it rather than stripping it away the way they did with terms for quarks.
--
Evan
-- "$30 for the One True Ring. $10 each additional ring!" -- JRR "Bob" Tolkien
Re:One thing stands out unaddressed
by
global_diffusion
·
· Score: 2, Interesting
Momenta is the product of mass and velocity.
Not true. For massless particles, the momentum is Planck's constant divided by the wavelength.
Particles at the speed can be considered as having all their mass converted into energy.
No exactly. Mass is a measure of internal energy. Massless particals are massless because they have no internal energy. You could argue that a photon can be produced from an electron, converting its mass to energy, but that reaction only happens when it hits a positron, so it doesn't really count. An electron won't decompose spontaneously.
The point that I was trying to make is that Heisenberg's uncertainty principle is not related to mass and velocity directly. It is related to the momentum of an object, which in some cases is mass times velocity times gamma (where gamma is a high speed correction factor / a function of the velocity).
Slashdot Mirror
Hey... that's how these things start. I just hope they formalize it rather than stripping it away the way they did with terms for quarks.
--
Evan
"$30 for the One True Ring. $10 each additional ring!" -- JRR "Bob" Tolkien
Momenta is the product of mass and velocity.
Not true. For massless particles, the momentum is Planck's constant divided by the wavelength.
Particles at the speed can be considered as having all their mass converted into energy.
No exactly. Mass is a measure of internal energy. Massless particals are massless because they have no internal energy. You could argue that a photon can be produced from an electron, converting its mass to energy, but that reaction only happens when it hits a positron, so it doesn't really count. An electron won't decompose spontaneously.
The point that I was trying to make is that Heisenberg's uncertainty principle is not related to mass and velocity directly. It is related to the momentum of an object, which in some cases is mass times velocity times gamma (where gamma is a high speed correction factor / a function of the velocity).