CBA to check around if this has already been on here. If not, have fun watching and feel free to discuss. Otherwise feel free to ignore.
(Why Alien Earth invasion scenarios are fucking retarded)
The Physics of Lasers and Space Battles
(Remember: The rock still hurts)
The Physics of Space Battles: Energy, Waves and Sound
Youtube Channel: SpreadingtheMuse (for more videos of the like)
Yeah I think I’ll ignore this, since it’s a guy complaining about how most SCIENCE FICTION movies and tv shows don’t follow accurate and realistic physics conventions…
Seems fair enough to me. Science Fiction is making predictions of the future based around our current knowledge of science.
Go ahead. That’s what “FYI = For your interest” means. If you’re not interested, ignore it.
Yet it is not only a guy complaining about unrealistic physics in science fiction, but also providing actual physical explanations for science fiction phenomena.
hey wait… in the first vid he says the gravitation is 9.8ms but it’s 9.81ms^-2
It’s good that he’s providing this correct explanation, but when he’s using it in the context of clearly unrealistic portrayals it just comes off arrogant.
I am sure there are even more ciphers to it. It is lke saying that pi equals pi = 3,14, when actually it equals 3,14159265 and millions of other decimal places.
I respect your opinion, even though I do not comprehend how you have come to that conclusion. His intent, as shown in other videos, is to teach people the truth about what is shown as “possible” in science fiction movies. It’s a little bit like Mythbusters. It is educational in a sort of entertaining way, and personally, I like it. That’s why I have linked it here for people to watch. I have learned a lot more about physics through this show than I have ever learned in school.
No, its making entertainment about potential technologies that would probably never happen. Massive difference. Thats the fiction part.
Also FYI, FYI mean for your information.
Read carefully and/or learn your units…
The point was that the guy expressed gravity in m/s, but it’s m/s² 
And that guy doesn’t know shit about “real” physics… He completely ignores friction in his nonsense explanations. You know… the whole… terminal velocity thing… and the atmosphere burning down most of these rocks.
Blowing up a big rock into 5000 smaller ones DOES help. Smaller rocks will disintegrate more easily in the atmosphere.
This is like arguing the biological impossibilities of zombies.
The games are meant for entertainment. Picking it apart is what egotistical douchebags do.
I think you mean 9.8m/s and 9.81ms^-1, he probably just rounded it as you are, just one less significant figure.
He also forgot to mention air resistance
That.
If you cook meat, if you leave the meat in one large brisket and throw it in the oven, it takes a LONG TIME to cook the center to the needed degrees, and there’s a possibility of burning the outside before the inside is done.
If you cut that brisket up into bite-sized chunks, it cooks a LOT FASTER and MORE EVENLY.
It depends on the type of zombies.
The l4d/ 28 days later kind are certainly possible.
:facepalm:
It was never about the precision of the acceleration, rather the units. Acceleration, as a rate if change of Velocity is measured in meters per second, per second, or m/s/s or m/s^2.
Also, terminal velocity, the energy requirement to move such an object from one gravitational field to another and atmospheric friction aside, why would you destroy a planet that you want? You would want to take it with a minimal amount of damage …
Then biological warfare would still be preferrable to throwing a rock at it, which would still make a military-style invasion unnecessary. Just spray the planet with anti-humanity-spray and be done with it. Surely an alien civilization capable of interstellar travel would be advanced enough not to exterminate another race one specimen at a time.
I have watched it again. You are right, he names the wrong measurement for acceleration. But he also states that the 9.8 m/s are also increasing “per second”. Which is just what the right measurement (m/s/s) says.
Also: Talking about blowing up an incoming asteroid to prevent the extermination of life on Earth’s surface, he suggested to “find the BIGGEST rock you can … and just drop it”
National Geographic reported on scientists having recalculated the estimated size of the dinosaur killer asteroid as being mere 4 to 6 km across. Source
Certainly not the BIGGEST rock you can find in our own solar system’s asteroid belt.
What about throwing a rock at Earth that is ten or twelve times as large? Would nuking it still have a life saving effect for us on the planet’s surface? Or could the broken pieces of it still have the size of planetary killers?
I think it’s funny that this guy is telling us about how badly physics is understood in some movies, while he can’t even describe what gravity is:
He talks about the “speed” of gravity, while he clearly means “acceleration”. In that respect, the “acceleration” of gravity is not 9.8 m/s but 9.8 m/s^2. The speed of gravity - the speed at which gravitational waves propagate - is the speed of light.
Of course, who cares? But then he’s making a video about mistakes even smaller than that, he should at least make sure his video is accurate. It’s like writing a text about correct spelling, but full of spelling mistakes.
only humans could overdo things that don’t even exist so much that they’re boring (spaceships, lasers, orcs, elves, etc.)
If movies and games were realistic, they would be like reality. We don’t need movies or games to see reality We need them to show us something we can’t normally see or experience! As long as they stay true to a basic logic and don’t deviate from it, and as long as you don’t get pulled out of your suspension of disbelief, it’s fine!
Arguing over the color of lasers vs. their strength is stupid. Imagine Star Wars without any sound (when viewed from space). Imagine Half-Life with realistic injuries. Or the impossibility of time travel in films that deal with paradoxes (Back to the Future, Terminator).
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.