SuperMagnetizer's channel

Asking how large the Universe is, is tantamount to asking how far away the edge of space is, which in turn is similar to asking where the edge of the Earth is. Silly question borne of extreme ignorance. The Universe is infinite in both size and age.

No, the speed of light is just under 300 thousand kilometers per second, or 186,282 miles per second, at least here on Earth.

Yes, that is Spock. Live long and prosper!

At 98% the speed of light, the Lorentz factor is about 5.025, meaning that lengths contract by this amount. A trip to Alpha Centauri 4.3 c-yrs away would therefore take a ship by its clocks T = [(4.3 c-yr)/5.025] / 0.98c = 0.873 yr. Traveling 4.3 c-yrs in 0.873 yr yields an effective speed of 4...

All I can say is that a 4D space-time event can never happen, because an event is defined as a point in space and a point in time. Such a point in space is zero-dimensional (zero size) and can therefore not exist, and such an instant has zero duration, during which nothing has time to happen. Th...

Only 100 billion galaxies in the Universe? I daresay, there are likely far more.

If, on the other hand, the lightning strikes the tracks and misses the train, then the man will see them simultaneously while standing stationary relative to the flashes. The woman will see the front flash before the rear flash, because she has moved closer to the front and farther from the rear ...

Excellent videos (all of them!) The Earth is a giant magnet. The North-seeking Pole of any magnet appears to "seek" Geographic North, but is actually attracted to Magnetic South, which is near the Earth's Geographic North Pole. Likewise, the Earth's Magnetic North Pole is near the Geographic S...

No object will ever appear to be traveling faster than light, since all observations rely on speed-of-light photons/waves. This has nothing to do with the object's actual speed relative to the observer, nor with the reality of 4D space-time.

True enough. Goddard, who was von Braun's boyhood hero, pioneered the use of gyroscopes and jet vanes, film cooling, gimbals, and other innovations, which von Braun and his well-funded team used in their own designs. Both men made important contributions, and both yearned for the peaceful explora...

The American Robert Goddard invented the liquid propellant rocket engine, first flight 1926.

Thanks! Also, it won't work with a weak or ceramic magnet, or a dead battery.

When you understand how magnets work, you understand how everything works.

Santorum is a self-righteous jerk. Ron Paul is the Christian here.

So, if I could shrink myself down to one seven-millionth the size of an electron, and landed on its surface, what would that be like?

There is no Planck Time, because there is no maximum speed limit.

There are no speed limits. No physical object can appear to travel faster than light, for it is light that we use to look at it with. Neutrinos, however, travel at the speed of light, as proven by neutrinos detected from SN 1987a. The OPERA neutrinos traveled faster than our "constant" c, not fas...

Yes, I've heard that theory as well. Neutrinos are supposed to be able to jump out of our 3D membrane, into higher dimensions, then pop back into our 3D brane, thus explaining their apparent superluminal speeds. But I prefer a much simpler model that says neutrinos travel at the speed of light (S...

"Well, a very very heavay ah heavy dua . . . birdtation tonight. We had a very dariss. . .darison. . .fight and let's go ahead tariss tasion lush to the bet de hethapet."

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That makes sense; I have read that neutrinos are actually "fermionic" waves of electromagnetic energy, as opposed to bosonic waves which are photons. As such, neither would have mass, but both would travel at the speed of light, which in my view is not constant.