How cautious should I be about the "big one" inevitably hitting the west-coast? |
- How cautious should I be about the "big one" inevitably hitting the west-coast?
- How far could a gravity train travel without passing through the Earth's mantle?
- How does a BJT Amplifier work?
- Why do airplane window covers need to be lifted during takeoff and landing?
- Some things are physically too small to reflect enough light to see them under a microscope. Would it be possible to use light of another wavelength which might not be visible to the human eye, but a specifically designed image sensor to look at things that size?
- Given the fact that sound waves travel further in water than air, how can radio waves travel so far in the vacuum of space?
- How do you create plasma on a plasma gun?
| How cautious should I be about the "big one" inevitably hitting the west-coast? Posted: 04 Jun 2019 02:34 AM PDT I am willing to believe that the west coast is prevalent for such big earthquakes, but they're telling me they can indicate with accuracy, that 20 earthquakes of this nature has happen in the last 10,000 years judging based off of soil samples, and they happen on average once every 200 years. The weather forecast lies to me enough, and I'm just a bit skeptical that we should be expecting this earthquake like it's knocking at our doors. I feel like it can/will happen, but the whole estimation of it happening once every 200 years seems a little bullshit because I highly doubt that plate tectonics can be that black and white that modern scientist can calculate earthquake prevalency to such accuracy especially something as small as 200 years, which in the grand scale of things is like a fraction of a second. [link] [comments]  |
| How far could a gravity train travel without passing through the Earth's mantle? Posted: 03 Jun 2019 08:49 AM PDT I've been reading about gravity trains which, in theory, would allow an object or vehicle to travel from one point on earth to another via a straight line, or chord line, in 41 minutes. One of the major engineering problems is that to travel any major distance, the chord line passes through or close to the Earth's mantle which is too hot (and fluid) to excavate. So my question is: What is the longest possible tunnel length through the Earth's crust and without passing through the mantle to connect two points on earths surface? What would the great circle distance on the surface be? And how long would the tunnel be? This is my first post on r/askscience, you guys rock! [link] [comments]  |
| How does a BJT Amplifier work? Posted: 03 Jun 2019 08:03 PM PDT I actually know the bases of the function of it, how Ic is the result of Ib and all that. But what about the other values you must take into account when designing one? How do you determine the right load line in both DC and AC, its power consume, etc. Also another question: what about coupling capacitors? I already know that they block DC and "let pass" AC but how do you determine their values? [link] [comments]  |
| Why do airplane window covers need to be lifted during takeoff and landing? Posted: 03 Jun 2019 01:01 PM PDT |
| Posted: 03 Jun 2019 01:48 PM PDT I've read in a comment somewhere in this subreddit, that we can't look at certain things like Atoms or Quarks since they physically can't reflect visible wavelengths because they're so small. Would this be a viable solution? [link] [comments]  |
| Posted: 03 Jun 2019 09:23 PM PDT An argument could be made that radio waves are simply extremely high-frequency sound waves - what allows these waves to travel through a vacuum? [link] [comments]  |
| How do you create plasma on a plasma gun? Posted: 03 Jun 2019 07:07 PM PDT What materials would be required to generate it? How much power? How heavy it would be? Would it generate any recoil? Thanks [link] [comments]  |
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