Recent content by MulderFBI

Hi I have found a video which is composed of 2 videos. In the first one you can see that a spiral branch is put into a stream and starts to move by itself in a snake like motion. In the second video similar spiral piece of wood is floating in a container and then water is poured into it and it...

Science is our future but effort must be taken to redesign some of it's principles to be environmental friendly. What's the point if our kids will be intelligent if they will never be wise?

Didn't find any more info but the explanation with rotated camera is fair enough. Thread can be closed.

Thank you for great resources!

Hi I have found a YT video in which there is an object recorded on infra red camera. It makes very strange maneouver. Is there any explanation what this could be? Thank you ( I have edited video so it shows only interesting moment).

I will try to send him message. I tried to copy that experiment but it's hard to find spider's threads now in winter.

You are right but in a communist countries those technologies were for sure not present.

There are RC helicopters in classic setup: You can also find RC helicopters in coaxial setup. Especially in a cheapest, toy like models: Here you can see tandem type RC helicopter: I think it's just a matter of how complicated and expensive model is. Most RC models are cheap and mass...

From what I know rotors on Chinook are counter rotating rotors and that makes up for tail rotor. The same principle works on Kamov-type helicopters with coaxial rotors. They are also counter rotating. That construction allows to transfer whole engine power into lift.

I once saw a crow on the street that was soaking a dry piece of bread in a puddle. Smart-ass ;)

I once won 500$ on the internet poker room random prize promotion

The 1982 novel by Polish sci-fi author Janusz Zajdel titled "Limes inferior" (english Lower Limit). It foresaw the use of electronic wallets, credit cards, ID cards, biometric readers. Elements of society classification present in it resembles me what happens now in China which wants to...

If they are capable of interstellar travel then no I don't think they will need Earth's resources, they could grab few asteroids and get what they want in precise and vast amounts. The only possibility I find is encountering intelligent alien life that is capable only to travel inside a Solar...

He explains what's in a closed jar: a wooden toothpick with one side painted on blue/green (he doesn't say why). It's suspended on a spider's thread which is connected to wooden stick under the lid. He uses plastic drinking straws which are empty and he tries to show that. That's basically all.

I am aware of the law of energy conservation but I imagine that if oxygen deficient water starts absorbing atmospheric air then that air would start to be sucked into the pipes thus maintaining pressurized flow? I am talking here about using some kind of a membrane that allows air particles in...