cobaltoxide

11 ms·

61.
by cobaltoxide 5y ago
> Based on conservation of energy It turns out that energy is not conserved globally in General Relativity. https://math.ucr.edu/home/baez/physics/Relativity/GR/energy_...
62.
by cobaltoxide 5y ago
> If the wave imparts energy on an object and makes it move The objects don't move. The space between them stretches and compresses. Now, if the gravitational wave moves through a large massive object like a star or planet, the elec
63.
by cobaltoxide 5y ago
> the wave and the force are the same thing? Nope. This is a common misconception. The difference between gravitational waves and gravity is a little bit like the difference between electromagnetic waves (emitted by an accelerating charg
64.
by cobaltoxide 5y ago
Agree with jleahy. I would add that considering counterfactual situations like "if the sun were to move instantly to the right" is of limited utility. That cannot happen (violates conservation of momentum). (Granted, other thoug
65.
by cobaltoxide 5y ago
"Gravity waves" are ordinary water waves, or other waves of a fluid, where gravity provides the restoring force: https://en.wikipedia.org/wiki/Gravity_wave They have absolutely nothing to do with gravitationa
66.
by cobaltoxide 5y ago
Gravitational waves do not behave in the way you have described. > I understand that to mean that on Earth we've managed to detect that increase from 2e20N to 3e20N. This not what how gravitational waves behave. This assumption is n
67.
by cobaltoxide 5y ago
I believe this answer is nonsense.
68.
by cobaltoxide 5y ago
> Is it possible to compress space? The geodesic distance between inertial test masses increases and decreases. Colloquially we say that space has stretched and compressed. Geodesic distance can be measured by the time it takes light to
69.
by cobaltoxide 5y ago
Here is an introductory paper on that exact topic: "If light waves are stretched by gravitational waves, how can we use light as a ruler to detect gravitational waves?" https://universe.sonoma.edu/moodle/plugi
70.
by cobaltoxide 5y ago
Gravitational wave detectors can only detect oscillatory signals, not static ones.
71.
by cobaltoxide 5y ago
Gravitational waves are waves of the metric tensor. Einstein's field equations provide the "restoring force." Importantly, gravitational waves are not waves of Newtonian gravity. Gravitational waves do not "push and
72.
by cobaltoxide 5y ago
Agreed, the MW definition does not seem to be correct.
73.
by cobaltoxide 5y ago
Shouldn't it be called Rustbang?
74.
by cobaltoxide 5y ago
Came here because I thought maybe AS8003 was another disappearing aircraft like MAS370.
75.
by cobaltoxide 5y ago
https://www.fun-mooc.fr/en/courses/live-object-programming-p... ?
76.
by cobaltoxide 5y ago
> There was never a reason for high status individuals to be on clubhouse Sounds like early-stage Quora.
77.
by cobaltoxide 5y ago
Not enough volume. And you have to maintain water in the tower in order to keep the water distribution system pressurized.
78.
by cobaltoxide 5y ago
Reminds me of the article "Were Early Modern People Perpetually Drunk? (2016)" https://news.ycombinator.com/item?id=13535868
79.
by cobaltoxide 5y ago
Are you referring to Uber as "highest regarded engineering org"? :grimmace:
80.
by cobaltoxide 5y ago
I had totally forgotten about Opera.
81.
by cobaltoxide 5y ago
If they are "independent contractors" then who exactly is paying for this time off, etc?
82.
by cobaltoxide 5y ago
Shout-out to UC Berkeley's Open Computing Facility (OCF) which has managed to host this content for decades.
83.
by cobaltoxide 5y ago
In what way would government investment help here? The main players already have tons of funding. Also, why should self-driving be a government priority?
84.
by cobaltoxide 5y ago
Do corporations experience emotions?
85.
by cobaltoxide 5y ago
That may be true, but I've had good luck asking recruiters for feedback after getting bad news. They usually give some good advice or feedback - over the phone, of course, never in writing. Typically they say something like "You w
86.
by cobaltoxide 5y ago
> But the result is beautiful. Uhhhh, gonna have to disagree there.
87.
by cobaltoxide 6y ago
How many lines of code is it?
88.
by cobaltoxide 6y ago
I suspect that, typically, when people mention ISO-8601, they really mean simply "YYYY-MM-DD" and are not seeking to incorporate all the other complications and details of the standard.
89.
by cobaltoxide 6y ago
Can I use this now? Is there a getting-started guide or gallery of examples?
90.
by cobaltoxide 6y ago
Another physics PhD chiming in here. I have never before noted the difference between "multiplier" and "multiplicand". The whole article has me rolling my eyes. In fact, I would argue that multiplication being associativ

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