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link to website with description of parts of keg
out port:
in port
There has been a stunning revolution in astronomy over the past ~6 years with the detection of gravitational waves by the LIGO and VIRGO consortium. Now that we are detecting "naturally" made gravitational waves, I've been wondering could we generate them artificially - and detect them?
Would be possible to generate artificial gravitational waves that could be detected with the current detectors (LIGO, VIRGO)? Short version - seems like no. Sources that have currently been detected are mergers of black holes and neutron stars that are 10's to 100's of megaparsecs away, so first I consider reducing the mass and having the source be closer - and this still requires incredibly large masses moving very fast (now in close dangerously close proximity!)
I also tried a quick idea about using motion of electrons within atoms to generate gravitational waves, but electron motion is not that much faster, and the mass of the electrons is much too small. Motion of atoms within molecules would not achieve the required speeds and thus would require even more mass.
A couple weeks after the 2020 US presidential election was held, Nate Silver tweeted several times about the irrationality of betting markets (for example PredictIt), since they still had a 10% chance of Trump wining various states.
Bit of a meta post here - how I use LaTex formatting for math / equations in blogger. Starting with this Stack Exchange TEX question/answer, I copied the provided code to load the MathJax library and then followed these blogger/google instructions in the section "change your blog with HTML or css", in the html section - edited the blog template, added the code copied from above into the <head> section. Seems to be working now:
$$a^2 + b^2 = c^2$$
$$y(x) = sin(\omega x)$$
$$c^2 = a^2 + b^2 - 2ab \cos(c)$$
I've been struggling to understand General Relativity - the theory that describes gravity - for a long time now. One thing I realized might help is a very simple example - solving a very simple, recognizable problem using general relativity. In an analogy with software engineering, I'm looking for how write "hello world" in new programming language.
For the equivalent of programming's "hello world" in physics, I'm going to choose the problem of tossing a ball up into the air. I'm going to solve this problem using 4 different types of physics: classical/Newtonian, quantum mechanics, general relativity, and quantum electrodynamics. I hope this will give me (and you perhaps) a better understanding of the differences and similarities between these theories, and some practical understanding of how one uses / applies them.
I captured some lightning strikes on video, it was neat to look at the individual frames and observe the qualitative standard progression of how they work.
