Showing results for "If...." in Physics

Fans of xkcd ask Munroe a lot of strange questions: What if you tried to hit a baseball pitched at ninety percent the speed of light? How fast can you hit a speed bump while driving and live? If there was a robot apocalypse, how long would humanity last? What if everyone only had one soulmate? What would happen if the moon went away? In pursuit of answers, Munroe runs computer simulations, pores over stacks of declassified military research memos, solves differential equations, and consults with nuclear reactor operators.

Given the fact that there are perhaps 400 billion stars in our galaxy alone and perhaps 400 billion galaxies in the universe, it stands to reason that somewhere out there, in the 14-billion-year-old cosmos, there is or once was a civilization at least as advanced as our own. The sheer enormity of the numbers almost demands that we accept the truth of this hypothesis. Why, then, have we encountered no evidence, no messages, no artifacts of these extraterrestrials?

Wenn xkcd.com einen neuen Science Cartoon postet, vibriert das Internet. Sein Blog "what if", auf dem der Physiker Randall Munroe jede Woche bizarre Fragen mit exakter Wissenschaft und genialen Strichmännchen beantwortet, ist Kult. Wie lange würde es dauern, bis wir merken würden, dass sich der Erdumfang verändert? Hätten wir genug Energie, um die ganze Weltbevölkerung von der Erde wegzubefördern? Wann (wenn überhaupt) wird Facebook mehr Profile von Toten als von Lebenden enthalten? Wenn man eine zufällige Nummer wählt und "Gesundheit!" sagt, wie hoch ist die Wahrscheinlichkeit, dass der Angerufene tatsächlich gerade geniest hat?

Randall Munroe, der geniale Erfinder von xkcd.com, legt nach. In der Fortsetzung seines internationalen Bestsellers "What if?" beantwortet er viele neue verrückte Fragen wissenschaftlich fundiert und umwerfend kreativ.

Engineering have a lot of little details that could seem stupid, unnecessary or trivial, but once you discover why are they there, actually it can be really intersting, clever or elegant!

In the vein of Randall Munroe's What If? meets Brian Green's Elegant Universe, a senior writer from Space.com leads readers on a wild ride of exploration into the final frontier, investigating what's really "out there." We've all asked ourselves the question. It's impossible to look up at the...