I wonder why projected area has been of much interest among physics communities, while the surface area could well be the solution unless any complex geometries are involved.
The question popped up in my head when the surface tension in a water jet was derived. Clearly the jet has a circular...
I Was wondering how a frenette heater works?
By frenette I mean the one that works thanks to friction.
What would be the maximum heat produced assuming that we take The most ideal situation.
Thanks a lot.
i understand why acceleration has much significance in Classical physics.
But something that has intrigued me is why my lessons focus a great deal on instantaneous acceleration.
I have had quite a hard time in figuring out what the practical application of this concept is!
Help me out guys!
Homework Statement
To find the direction cosine of a equation say (4x+5y+7z=13)
Homework Equations
Im not really sure what to do
The Attempt at a Solution
(I know this is really basic but i would be glad if someone helps me with this
The fact that energy in a laser can propagate without much loss over long distances is quite shocking !
It's a renowned fact that energy is dissipated when propagation takes place through any medium...
(I'm fully aware that laser is an exception)
But I have quite a difficult time understanding...
If only 14% of the total solar emission is in the UV region, why is ozone depletion a cause for concern.
Considering that only a small fraction of the sun's total radiation reaches earth.
Isn't it a fact that the population inversion is known as a negative temperature process?
If yes,increase in temperature hampers population inversion and hence lasing action becomes invalid.
It's obvious that continuous operation of a krypton arc lamp generates tremendous heat.
My question is...
Hello
I've been wondering how certain solid state lasers could have a continuous lasing action (Nd YAG laser for instance )
If so,the understanding that the best lasing conditions are when the temperature Is lowest gets disproved(considering that a commendable quantity of heat is produced during...