Recent content by smyth

What if I shoot a photon upwards in that train? Will the direction of the photon be altered by the speed of the train?

Thanks a lot Ratch, and to briefly answer your observations/questions: Because i don't handle electronics to well, and there are a lot of misunderstandings in my head (as you pointed out in the reply). :), sorry for that. I'll try to use it right, and also skip unnecessary...

applying KVL ... well that would be easy if instead of capacitors there will be resistors. voltage drops across the resistances must equal the sum of the two sources (according to the signs on the circuit). but here there are only capacitors, so i guess (concluding that they charge up) we can...

it's not intended to be practical, i just want to understand how it woks/eliminate bugs i have in understanding electricity. The capacitors are initially uncharged. Like i said, if the circuit would have had only one voltage supplier, I'm pretty sure the answer is that there will be a current...

Hi guys, can you please explain me what happens in the circuit I've attached? It looks easy but still puzzles me. I mean if one voltage supplier was missing i know that the two capacitors are connected in series, and they will charge. Having two voltage suppliers do the capacitors still charge...

Almost thought i understand Twin paradox... but Wiki blew that thought away. Quote from wikipedia: "If the spaceship accelerates at a constant 1g, he will after a little less than a year (mathematically) reach almost the speed of light, but time dilation will increase his life span to thousands...

so ... is there a chance to understand how physics (acctuallly) work beigining with 31? not to begin a new career, but out of curiosity, as a hobby

Thanks Marcus, now it makes sense. I thought it was just a mind invention so that The Big Bang Theory would still stay up (i'm referring to the inflation, the fast expanding space, as they say, or in the light of your explanation, fast changings in geometry)

I heard this on the Discovery Channel also, and i don't get it. what is space? how come it can expand?

i would have answered: Energy is the ability to move (or better said to deform a frame). The ordered movement of microparticles is regarded macro as useful work, the chaotic one is regarded macro as heat. Probably, i would have been expelled from the class :)) (with a sudden lowering of my...

Thanks, i didn't get it how the conservation works in this example, but you're firm answer challenged my neuron and i think i got it. When repelled, the two spheres of pendulums tend to go in opposite directions, in a straight line. The pivot from the center of oscillation is however opposing...

what if you have two pendulums, with the same center of oscillation, and you make them repel and attract each other (by means of electromagnetic force, let's say). The rotation will be not a complete circle, but an arc about let's say 90 (each describes a 45 arc) degrees. In this case .. still...

i was looking for an answer to this question " what happens to Earth if suddenly stops rotating". and i don't care about humans, trees, mountains flying away at very high speed, what I'm curios about is how much the orbit of Earth is affected. Let's say I'm a very , very large entity, with...