-
Posts
7,316 -
Joined
-
Last visited
Content Type
Profiles
Forums
Events
Everything posted by IKnowPhysics
-
Also, not sure why Adidas is forcing their brand, they already have established hockey branding in CCM and, cough, Reebok.
-
Also, now going to wait to buy jerseys.
-
Anything for a buck, those pricks.
-
I liked it. One of the last watchable space-related scifi horror films, excepting the enjoyable Prometheus. Other recent films, like Pandorum, don't quite hold up. FISHBURNE... IN... SPACE!
-
One of the best trades ever.
-
Not scientifical: I like to think of space time like a piece of paper, or better, a piece of saran wrap. It stretches a little when you put heavy things on it. Generally, you can only move around on the surface. But with enough energy, or something, you can fold it, and leap from one surface to another. https://www.youtube.com/watch?v=n6lDG-bP3zg http://www.youtube.com/watch?v=3cehwiHIlho
-
Yeah, that's correct. The Milky Way Galaxy had a high rate of star production around 10 billion years ago; our sun is only 5 billion years old. Not sure this is the completely accurate. The Sun's definitely a late bloomer in our galaxy and its age was determined by nucleocosmochronology (word of the day), but I'm struggling to accept that it was because of an especially high content of heavy isotopes (the method examines Uranaium and Thorium concentrations, but doesn't necessitate that the concentrations are especially high). Due to the well-understood r-process and s-process, those higher concentrations of heavy elements usually appear in larger stars than the Sun (the Sun is a yellow dwarf, aka a G-type main sequence star).
-
Not really. None of those statements is really bulletproof, and the attempted logical extension that faster than light travel is impossible falls flat. There's similar arguments that say that time travel must be impossible, relying only on the argument that we haven't met a time traveler yet (despite some weak efforts). There's also logical similarity to Roko's Basilisk (warning: you may be tortured by an evil supercomputer). The uniqueness that is our form of intelligent species is a product of the physics of our temperature/energy domain, the exacting evolution of our local cosmos, the incredibly specific chemistry and resulting biochemistry of our planet, the hundreds of millions of years of species evolution, the thousand years of mathematical and scientific enlightenment, and the hundred years of aerospace endeavor. We're currently the only known species that has the intelligence, resources, and gravity conditions to attempt space flight and is also interested in attempting space flight. Even if we were being contacted or visited, we may not even know what we're looking for or at. Even reducing our search for intelligence to something comprehensible on our own spatial scale (>0.01mm to <10km) or looking for signs of existence or communication that we could even remotely begin to detect and understand could be limiting the search to narrowly. But there are a lot of planets and there has been and still is a lot of time. As for travel speeds, our current physics models show matter and energy as we know it topping out at light speeds. Is it possible to break beyond that? No, not without adjusting the model. And in all likelihood, we're talking about an incalculable amount of energy required to achieve this, without getting into wormholes and other space-time oddities. Does this kill the chances for interplanetary and interstellar human travel? Naw. Time dilation is probably the single biggest aid to us for long-distance travel. The faster the spacecraft goes, the "faster time goes" on the spacecraft. For instance, for constant acceleration and then deceleration at 1g, to reach the center of the galaxy (30,000 light years away), the time experienced on the spacecraft would only be 20 years. We would just need the energy to accelerate and decelerate a spacecraft like that.
-
I got you. Wiki is your friend on a lot of these sorts of topics, but some of the articles can be pretty thick and require a pretty good level of understanding. 1) Correct-ish. The metric by which we measure spacial distance in the universe, an inherent property of the universe, is expanding. Imagine a box, and in it is the universe with everything in it. Incorrect thinking: the universe was previously small and in the middle of the box, then it exploded, and it is still expanding to take up more space in the box. Correct thinking: when the box was made, the universe already took up the entirety of the box. In a manner of speaking, we sort of measure distances in space by how far they are in fractions-of-boxes. The distances we measure, because they rely on the size of the box, use a metric, which is an inherent property of the box. But we've figured out that those fractions-of-a-box are getting bigger because the box is getting bigger. And what you can't do is go outside the box and see what's there or how big the box is, because if you could, you'd still be inside the box. The physics models only describe what's in the box and how the box works, not what does not and cannot exist outside the box. 2) Correct. Instead of inventing an easy way to talk about this, I'll point you to Hawking, whom I think writes pretty accessibly about the subject: So, you can imagine what happens before the Big Bang, using our mental concept of time, but time doesn't really actually begin until our universe does, during the Big Bang. A fun aside: particle colliders, like the Large Hadron Collider, make physics conditions of extremely high energies/temperatures. The conditions are similar to the conditions that existed in the universe shortly after the Big Bang, as the universe cooled quickly. By using colliders, we probe the physics of the Big Bang and learn about what types of particles and radiation existed back then. The LHC has been able to make temperatures of ~10^17 degrees Kelvin (13TeV), which corresponds to the temperature that the universe was ~10^-14 seconds after the Big Bang (I could be off by a few orders of magnitude). The higher in energy we go, the closer to the Big Bang we get to look. And there's still a lot we don't know, like what dark energy and dark matter are and what it's up to or when and how it's all going to end.
-
Taylor is FAST. I know this is as advertised, but it seems to give offensive formations another dimension.
-
Rex Ryan Offers Roster Spot to Anyone who Punches Bill Belichick in the Dick https://medium.com/sportspickle/rex-ryan-offers-roster-spot-to-anyone-who-punches-bill-belichick-in-the-dick-e1661ff6c33d
-
Something something bullies.
-
Sabres hosting their own prospect tournament Sept 12-14
IKnowPhysics replied to pi2000's topic in The Aud Club
This is to replace the Sabres' participation in the Traverse City Tournament. HarborCenter: we do it our damn selves. -
Finger rubbing intensifies.
- 11 replies
-
- interstellar
- tits
-
(and 1 more)
Tagged with:
-
Can't. I'm rocking a razor fade with a big beard and perfect vision right now. Outside, I'll occasionally prefer the old pair of wayfarers to the usual pair of aviators. But I do wear the old school short sleeve shirts with ties, much to the chagrin of what the Cape has mostly become, which is a field of tucked-polo-wearing boomers. People just don't work like this anymore. I mean, look at this notorious punk ass.
-
Alright alright alright,
- 11 replies
-
- interstellar
- tits
-
(and 1 more)
Tagged with:
-
IKnowPsychics or... Liqa Madiq.
-
At Cape Canaveral for a month. Watch for an Atlas V launch on the 31st. Hopefully, this will light a little fire under the ass of my career. I'll be "on console" (read: in the control room) for the launch. In the meantime, I'll be sampling local beers. Cigar City Jai Alai is winning so far.
-
Voynov's already in jail... AND still has a career!
-
Mike Richards. Just guessing.
-
off topic Professional Womens Hockey (Coming to Buffalo)
IKnowPhysics replied to That Aud Smell's topic in The Aud Club
Step yo game up! Brianne's not from Buffalo, she's from Sheffield, OH. She won't be automatically be married to the skyline on a new team in a new league in a new town. Find and feature her strengths and loves. She has gold medals from IIHF and a pair of silvers from the Olympics. Her previous helmets for Team USA had stars and stripes and an eagle. Her RMU helmet was simpler. If your heart's not in it, I get it. But I think there could be a market for artistic and graphic design in pro/am hockey branding, and maybe a little pro bono hockey whathaveyou fosters a fun branch of your talents. Josie power! Totes agrees. -
Agreed. There's enough national broadcasts of football teams I don't love to fulfill any desire to watch them. I don't need all 32. Hockey's... a little different. I'd consider paying the difference if it's meager.
-
off topic Professional Womens Hockey (Coming to Buffalo)
IKnowPhysics replied to That Aud Smell's topic in The Aud Club
To... match... the... jersey...? I like everything else about that shirt. -
In some towns, this is the best hockey they have. Check your privilege. :D I'm not really worked up about it, but like you said, it's dumb as hell.