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Secondly, physics, that old prankster, teaches us that motion tends to continue in its own direction unless otherwise directed. … Having learned this valuable lesson of physics, the penitent might consider himself Smart, and says: "I shall beat this device by physics of mine own!" …

Sure! 1. Most of these effects we can already do at short ranges. A fan gives you artificial wind, a space heater gives you artificial heat, a space aircon gives you artificial cool. A garden hose giv …

A totally normal human solution: The answer here is circular breathing, a common technique employed by wind instrument players, allowing them to hold notes for a very long time. Here is a very nice …

The king of our country is a modern monarch in outlook and has devised a very similar mode of imprisonment! Deep pits and torture tables and ordinary prisons are much too practical and pedestrian. The …

Well, if they want giant temple spaceships... why not just go EXTRRA LARRGE! Look for rocky, airless moons and carve gigantic symbols into the surface. Imagine a Cerne Abbas Giant hundreds of miles ta …

Nothing of Note, Sorry. Thus far almost everyone has been mesmerised by the Red Herring of oxygen toxicity. Given the time constraint of the query and given the chemistry of the experiment, I'm sorry …

One possible super power: I would imagine that a super hero that could manipulate strong force could easily mash together vast numbers of particles such that she could create and sustain super heavy …

So, obviously the natural answer is NO. But what everyone really wants is an answer that is YES! Because you have a world where you are not going to let facts get in the way of a good story, right? …

Of course it's plausible! Your world, your rules. Since you have what is basically a human doing the shrinking & expanding of the metal, the obvious means is a kind of magic. As you already said: th …

Sooner or later, no matter where his well is located, you're going to hit water -- the water table. If his well is any deeper than that, he'll be swimming, and that's as deep as he can safely go. Wh …

Reality Check = YES! As a matter of fact, there was, once in the distant past, a very tiny ocean of molasses here on Earth, and at least one person came pretty close to what we'd call surfing on the b …

OUCH! One of the great "practical experiments" we used to do, way back in the last century, was to cut the big magnets our of PC hard drives. They make fun toys, and since they were paired, you got tw …

The CAMERA. All your laser cannons and rail guns and ballistic weapons, and even your sand won't amount to much, either in space or planetside, without good intel. How do you know what to shot at if y …

Literally Everything Less Electric Pitched Percussion. This is simple! If your world is Post-Pockyclyptic, then you've got loads of already existing metal, stone and wood bars around. You just need t …

Nice image! That's a Roche world: Such a planetary system would be double locked and can share an atmosphere. Eventually they'll end up sharing ocean and land and over the course of geo-theiologi …