Recent comments in /f/askscience

SignalDifficult5061 t1_j8jramu wrote

Reply to comment by CrateDane in Why does X-inactivation happen? by NeedleworkerCapital8

nice answers!

I'll just that extra copies of a single autosome (so 3) generally end in embryonic lethality, except for Down Syndrome and a few others very rarely. So dosage is generally important for whole chromosomes.

Extra X chromosomes lead to relatively mild phenotypes vs extra single autosomes, which may relate to X inactivation.

Total genome duplication isn't limited to just plants, and some frogs have up to 12 sets. I don't know a ton about that, other than that often many of those chromosomes aren't fully functional.

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KillerCodeMonky t1_j8jr7mn wrote

Reply to comment by agoodpapa in Light traveling through a medium that slows it. Does the same photon emerge? by TheGandPTurtle

Movement perpendicular to and away from the earth will convert to potential gravitational energy, which is then released when the ball moves back towards the earth.

In addition, you're assuming that the balls are passive participants. In actuality, from the waves perspective, they are actively resisting being lifted, and actively attempting to fall, limited by their buoyancy in the water. When the wave causes the water to fall away from the balls, they are falling into the water on that trailing edge.

Finally, conservation of energy dictates that that energy does not just disappear. If the energy goes into the ball as movement, something has to stop that movement. That something is going to be either gravity if moving up, or the water itself in any other direction. So the energy is moving from the water, into the ball, back into the water as it resists the ball displacing it to move.

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platoprime t1_j8jp0pp wrote

Reply to When measuring the wavelength of EM radiation... what's actually being measured? by Grand-Tension8668

>The question being, we're able to describe the physical wavelength in nanometers of these waves that apparently aren't oscillating in space so much as they oscillate between electric and magnetic fields. ...how do you assign a unit of length to that?

Okay I see your confusion. The electric and magnetic fields are overlaid on top of space so they are 100% physically oscillating up and down and side to side as they move through space. If you're talking about motion through one of the fields you're talking about that motion occurring through space.

After all a field is just a value assigned to every point in space.

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platoprime t1_j8jo8wr wrote

Reply to comment by Randywithout8as in When measuring the wavelength of EM radiation... what's actually being measured? by Grand-Tension8668

Why not? Because you don't think they'd understand it? Because you can't explain it?

I'm struggling to imagine a good justification for, well, misinformation.

> but maybe try improving on it rather than just listing the definition and feeling superior.

I can definitely explain it better if you like.

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Randywithout8as t1_j8jo36y wrote

Reply to comment by platoprime in When measuring the wavelength of EM radiation... what's actually being measured? by Grand-Tension8668

I mean, to OP it seems like they're mystery balls. I don't feel "self-propogating oscillations in the electromagnetic field" is very helpful as an explanation... you can critize what I've put down, but maybe try improving on it rather than just listing the definition and feeling superior.

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terribleturbine t1_j8jnj6o wrote

Reply to comment by tpolakov1 in Light traveling through a medium that slows it. Does the same photon emerge? by TheGandPTurtle

But isn't it true to say "that electron state" in my left hand and "that electron state" in my right hand are states of two separate electrons?

It was my understanding that electrons had a ton of possibilities states/superpositions that they only "chose" one when they became entangled, is it wrong to think of all the possible positions as the "electron" and it's current configuration in my hand as the electron state in this branch of the wave function?

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