Recent content by tabchouri

agreed with that DaleSpam, 3 angles are needed to uniquely define the position in 3d. ----------------------------------------------------- Correct me if I am wrong. http://ghazi.bousselmi.googlepages.com/pr%C3%A9sentation2

with + and - there is no precision loss neither, there might be some cyclic overflows in the intermediate values, but the final results will always be correct. ----------------------------------------------------- Correct me if I am wrong. http://ghazi.bousselmi.googlepages.com/pr%C3%A9sentation2

Thank you for the reply. The site is well written, light, simple and correct (as far as I could tell). But allow me to say: - The doppler effect explanation would be, as stated there, more confusing than explanatory. Further, it's not the visual effect that is of interest, but the real flow of...

Yes, i got it, we still need an answer. ----------------------------------------------------- Correct me if I am wrong. http://ghazi.bousselmi.googlepages.com/pr%C3%A9sentation2

Compared to the time flow on earth. I meant to say that an observer on Earth would see the time flow of the traveler go slower than his time. But, when reading this (http://en.wikipedia.org/wiki/Time_dilation): As well as rethinking the twin paradox, I crushed onto the same confusion. Since...

Although it is misleading to compare time flows at different frames especially when you take into considerations some of the "seem to be" statements. To try to reply your question, the time flow on Earth will be faster than the time flow of the traveler...

i would say the first hypothesis. inertia is inherent to mass.----------------------------------------------------- Correct me if I am wrong. http://ghazi.bousselmi.googlepages.com/pr%C3%A9sentation2

Most certainly yes (if there is no air friction, or the room he is in is closed). If the room is open, so the air outside will push the man a little bit backwards. ----------------------------------------------------- Correct me if I am wrong...

When you apply an electric potential on a capacitor (say from a battery, d.c), the capacitor charges and for a slight moment, there is effectively some current passing through the circuit until the capacitor is full charged. But the current never pass through the dielectric (or at least in usual...

If those are all free variables, you won't be able to solve the system as you have 3 variables and only 2 equations. and yes, it would be so. ----------------------------------------------------- Correct me if I am wrong. http://ghazi.bousselmi.googlepages.com/pr%C3%A9sentation2

now here is the equation of free fall X(t) = X0 - V0 * t - \frac{g*t^2}{2} apply it to the two ball, remember that you have a delay between the two droppings. ----------------------------------------------------- Correct me if I am wrong...

are you sure ? i did not do the math, but the UNIT of (m1-g)/m1 is not a unit of acceleration ----------------------------------------------------- Correct me if I am wrong. http://ghazi.bousselmi.googlepages.com/pr%C3%A9sentation2

No, you can't have an accelerating object (acceleration <>0) with constant velocity = 0. Now, you can have an acceleration with velocity =0 only on discrete instants: when you throw and object upward, it will go up until it stops (velocity=0) for a tiny instant, then falls back. The...

Not in any bit. The theory says nothing with real rest mass can travel at c or higher. The tachyons are hypothetical particles that have imaginary mass, hense no contradiction. ----------------------------------------------------- Correct me if I am wrong...

Your example is about how, not the why. I think the why Astronuc was speaking of is: behind the gravitational force itself, why does masses create a gravitational field, why does matter attract, why does charges interact ? Well, i won't say it better, the challenge here is understanding the...