/u/grkirchhoff's posts in /r/askscience

Year:

Only show posts with narrations

Are substances that are electrically conductive necessarily thermally conductive, and vice versa?

1 upvotes

Mark as read: Add to a list

So, other than numerical constants, what are the permittivity and permeability of free space? What exactly is it about particles that changes these values for being in a medium?

1 upvotes

Mark as read: Add to a list

Given that motion is relative, can we be sure that the observable universe, and everything in it, isn't moving faster than light?

1 upvotes

Mark as read: Add to a list

There is a post where a cat looks miserable in a costume (link inside). Can you actually use cats facial expressions to tell how they feel?

1 upvotes

Mark as read: Add to a list

Do any particles other than photons travel at C?

1 upvotes

Mark as read: Add to a list

If an alcubierre drive existed, what would a passerby see when looking at a passing ship that was using the drive to travel faster than light with respect to the observer? Would the observer still see a clock on the ship moving slower than his own clock?

1 upvotes

Mark as read: Add to a list

Can you have instantaneous velocity change?

1 upvotes

Mark as read: Add to a list

With regard to the cosmological horizon problem, why isn't "the universe just started off with an initial condition of being fairly uniform" considered a potential solution?

1 upvotes

Mark as read: Add to a list

Will computers ever be able to simulate a drugs interaction with a human completely enough to eliminate the need for clinical trials?

1 upvotes

Mark as read: Add to a list

Is the sound of the wind from air molecules hitting each other, their surroundings, or both?

1 upvotes

Mark as read: Add to a list

Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Are substances that are electrically conductive necessarily thermally conductive, and vice versa?	1
So, other than numerical constants, what are the permittivity and permeability of free space? What exactly is it about particles that changes these values for being in a medium?	1
Given that motion is relative, can we be sure that the observable universe, and everything in it, isn't moving faster than light?	1
There is a post where a cat looks miserable in a costume (link inside). Can you actually use cats facial expressions to tell how they feel?	1
Do any particles other than photons travel at C?	1
If an alcubierre drive existed, what would a passerby see when looking at a passing ship that was using the drive to travel faster than light with respect to the observer? Would the observer still see a clock on the ship moving slower than his own clock?	1
Can you have instantaneous velocity change?	1
With regard to the cosmological horizon problem, why isn't "the universe just started off with an initial condition of being fairly uniform" considered a potential solution?	1
Will computers ever be able to simulate a drugs interaction with a human completely enough to eliminate the need for clinical trials?	1
Is the sound of the wind from air molecules hitting each other, their surroundings, or both?	1