/sci/ - Science & Math

I freaking hate how nowadays the meaning of the word "Scotsman" is broken. Musicians, actors, sports players, are all being called Scotsmen.

Pic related with a true Scotsman

Dear /sci/

As James Clerk Maxwell showed, light is an electromagnetic phenomenon. Mirrors reflect electromagnetic radiation.

Question: In that case, why don't mirrors reflect magnetic field lines? Legitimate answer please.

How are you celebrating the 150th anniversary of Maxwell's unification of electromagnetism, /sci/?

His letter to Faraday, the "This coincidence is not merely numerical" one, is dated October 19th 1861, 150 years ago today.

a professor and his assistant were working on liberating some negatively charged hydroxyl ions when his assistant said "what if the salycylic acids dont accept the hydroxyl ions?" the professor then replied "those aren't hydroxyl ions, thats my wife."

>>1578206
>Implying we fully understand the flux
>Implying we know how magnets work
<span class="math">\nabla \cdot \mathbf{E} = \frac{\rho}{\epsilon_0}[/spoiler]
<span class="math">\nabla \cdot \mathbf{B} = 0 [/spoiler]
<span class="math">\nabla \times \mathbf{E} = -\frac{\partial \mathbf{B}} {\partial t}[/spoiler]
<span class="math">\nabla \times \mathbf{B} = \mu_0\mathbf{J} + \mu_0 \varepsilon_0 \frac{\partial \mathbf{E}} {\partial t}\ [/spoiler]

>Implying knowing WHAT something is, isn't essential
It isn't to physics. I don't know what the EM field "is", except that it behaves according to Maxwell's equations. You could say that knowing how something behaves is knowing what it is. Sure. It is an entity with these properties. But can I define it in terms of other entities? No, not really.

>How can you even begin to have any slight idea about something when you can not form a concrete image about the thing you're studying?
Spin. Color charge. You try and form a concrete image of that.

>>1578208
Momentum in one direction is conserved if the laws of physics are independent of position in that direction. (x-momentum is conserved if nothing changes if everything moves in the x-direction). Energy is conserved if the laws of physics are independent of time.
>>1578225
>Momentum invariant under translation in space
>Implying momentum is a function of space coordinates and not an aggregate property of a system.

Lrn2 Lagrangian mechanics.

>>1578206
>Implying we fully understand the flux
>Implying we know how magnets work
<span class="math">\nabla \cdot \mathbf{E} = \frac{\rho}{\epsilon_0}[/spoiler]
<span class="math">\\nabla \cdot \mathbf{B} = 0 [/spoiler]
<span class="math">\nabla \times \mathbf{E} = -\frac{\partial \mathbf{B}} {\partial t}[/spoiler]
<span class="math">\nabla \times \mathbf{B} = \mu_0\mathbf{J} + \mu_0 \varepsilon_0 \frac{\partial \mathbf{E}} {\partial t}\ [/spoiler]

>Implying knowing WHAT something is, isn't essential
It isn't to physics. I don't know what the EM field "is", except that it behaves according to Maxwell's equations. You could say that knowing how something behaves is knowing what it is. Sure. It is an entity with these properties. But can I define it in terms of other entities? No, not really.

>How can you even begin to have any slight idea about something when you can not form a concrete image about the thing you're studying?
Spin. Color charge. You try and form a concrete image of that.

You're a' a bunch of gobshites.

>>1097841
It can only be acheived by understanding.

Hi there, I'm just the greatest physicist who ever lived and I betcha noone knows my name. Oh well, at least I have my name attached to a rarely-used form of measurement of magnetic flux!