-
Posts
10567 -
Joined
-
Last visited
-
Days Won
2
Content Type
Profiles
Forums
Events
Everything posted by ydoaPs
-
GAH!!!! There's no such thing as centrifual force! The acceleration is clearly pointing toward the center of rotation, not outward.
-
Actually, it's pretty easy to get a hold of uranium ore. Some sites(like unitednuclear) even have instructions on how to separate the uranium from the ore.
-
Really? I could have sworn that that's wrong. IIRC, there are four things that could happen once a cell has undergone an ionizing event due to radiation:1)The cell repairs itself and divides normally. 2)The cell divides abnormally creating diseased daughter cells. 3)The cell divides abnormally creating dead daughter cells. 4)The cell dies. The amount of radiation you need to receive to get radiation poisoning is laughably large. I just got done working at an older power plant. I worked there for 6 months and I got 6mrem due to occupational exposure. Do you know how much you got? Roughly 150mrem(it could be higher depending on if you fly a lot or if you live in a valley). Nuclear power is less likely to cause cancer than smoking. Like when you get a sunburn? In most cases, your cell repairs itself with no noticeable defect. Although cancer is a stochastic effect, it takes a quite ridiculously large acute dose to get radiation sickness. The reason chronic exposure WILL NOT cause radiation sickness is because your cells heal themselves so well. What do you define as unsafe levels of radiation? Yes. Not only do we have immense training, we design our reactors such that it is nearly impossible for a Chernobyl type incident to happen again. They had a positive void coefficient, so when their pressure continued to drop causing more steam generation, their core reactivity increased making the problem worse. Our reactors are inherently stable. We don't have steam in the primary, so we don't have a void coefficient, but we do have a negative coefficient of reactivity; when the reactor heats up, the reactivity of the core decreases.
-
I don't really have a problem with nuclear power. Contrary to what some people would have you believe, nuclear power really is safe. We take several different redundant safety measures and(at least the navy) use inherently stable reactors.
-
Eric5, what do you make of REAL experiments with REAL clocks?
-
All plants undergo phototropism?
-
So, plants aren't alive? Maybe "M" is "Metabolism."
-
I don't know. Can you?
-
IIRC, there's an antimatter cloud in the centre of our galaxy.
-
That's exactly it. The one accelerating is the one moving. But if neither accelerate, they each see the other as moving!
-
In a carnot engine, the working fluid is at the temperature of the heat source when the fluid is at the heat source, and it is at the temperature of the heat sink when it is at the heat sink.Heat transfer, however, is impossible without a difference in temperature([math]Q=mc(T_{hot}-T_{cold})[/math]) This is a temperature-entropy diagram of an ideal carnot cycle: The line from A to B represents the heat being transferred into the system.The line from B to C represents an Ideal work process performed by the system. Notice how the line is straight. In all real work processes, friction exists, and thus entropy increases. The line from C to D represents heat being transferred out of the system. The line from D to A represents an Ideal work process performed on the system. Note this line is straight as well. In real heat engines, the work lines are curved, because they both increase entropy. edit:gah, I play with a heat engine every day....I should be able to explain it better than that.
-
No, just a lot.
-
There are far more fission fragments than that. edit: Here is what seems to be a decent intro to nuclear physics.
-
So, dark matter has gravity, but no friction? Doesn't that mean that it would be impossible for matter to clump together to form macroscopic objects? With the attractive force, but no impeding force, it would seem that a system of dark matter particles could be in somewhat of a perpetual harmonic motion. Is that reasonable?
-
Not the same frequency IR. It's like a remote control LED. Do outside heat sources change your TV channel?
-
So, if there is a two body massive dark matter system, instead of colliding due to gravity, there would be harmonic motion?
-
He pretty much explained it in the video. The "sensor" bar isn't a sensor at all. It is really two IR LEDs. The Wiimote is the actual sensor. If you mount IR LEDs to a pair of glasses, like he did, the Wiimote can track your head movement. It's basically like playing your game using the sensor bar instead of the Wiimote. Personally, I'd love to see this used in a FPS. He has another video with "Minority Report" style finger tracking using an IR LED array, a Wiimote, and reflective tape.
-
I'd like to see more blogs about Lagrangian mechanics.
-
What subject? The OP has yet to say! You deny that certain religions make claims which are, at least to some extent, falsifiable? Surely the Earth ceasing to rotate for a bit in order to make the day longer would have some effects that we could find. How about a global flood? Splitting of a sea? Dead walking the earth? Giants? Unicorns?
-
That makes it odd that you can buy one. IIRC, they work exactly the same as a hovercraft....only smaller.
-
My first vaguely related blag entry is about abortion and ethics and such. I'm probably going to revise it when I didn't just get off work to make it less dreadfully boring and to explain myself more.
-
I would like to thank you for completely ignoring my post. Examples? What claims? That is simply how it works. The burden of proof is on the affirmative(the one making the claim). You are innocent until proven guilty, not the other way around. What claims? Why is it wrong to use science to back up your position? What claims? Which atheists? Does science go against the claims of these atheists?
-
I think the OP is referring to the home page. Forum Index
-
So not as handy as the link at the top