Just curious, is this a corporate network restriction, or something you've configured your web browser to block? This is the first time I've seen this as a problem for Hacker News folks.
A flywheel has a lot of angular momentum. Of course, that's the point. On buses, the axis of the flywheel is oriented in the vertical axis so that the bus can turn corners or change horizontal directions without causing gyroscopic precession. But on a ship that pitches and rolls, the external force on the flywheel will cause a torque that changes the direction of the angular momentum of the flywheel. A roll would do something like pitch the ship forward or backward (depending on the direction that the flywheel spins), which would really mess up the ship's motion, I imagine. The preceding is just my thought experiment on what would happen to such a ship. Let's build one!
Things I absolutely won't order from Amazon: products you put in your body, products you put on your body, and electronics. Their business model and fraud are pretty much indistinguishable at this point.
Look for kitchen printers. They're dot-matrix / ink ribbon receipt printers for use in restaurant kitchens, where the plate warmers and other sources of heat will turn thermal paper completely black. So, instead, they use rolls of ordinary bond paper.
The fact that they make a loud noise every time an order comes through is useful for a restaurant kitchen, too.
A compressor is the right answer. If you lean toward more old-school audio engineering, I would recommend one of these compressors:
* Alesis 3630
* DBX 166 or 266
* FMR Audio Really Nice Compressor
Explore the various demos on YouTube to see what these are about. The compressor goes between your audio source and your amplifier. I personally use the Alesis 3630 for normalizing the audio in my ham radio transceiver setup.
Someone else did this, then built 20 more next to it. Now it's a business where they sell telescope time to researchers and hobbyists. I imagine it's profitable for them.
The main principle of celestial navigation is pretty easy to visualize.
Pick a celestial body that's in your sky right now, like the Sun. At any given time, the Sun is directly over a single point on the globe (the GP, or Geographic Position). So if you measure the Sun as being directly over your head, you know where you are exactly on the globe, after consulting your clock and almanac.
But, if you measure the Sun at a non-overhead angle, then you and everyone else with that same measurement must be on a circle whose centre is the Sun's GP. (Visualize the circle as the edge of a flashlight beam being pointed directly downward at the GP.) The rest of celestial navigation is refinements to figure out where you are on that circle.
You can also do it at night using star charts (or as you call it, an "almanac"). That's how most of the digital celestial navigation solutions work, they use the positions of bright stars to determine a fix based on observatory data.
Might I differ on "easy", from second hand experience of watching my
father go through his advanced yachtsmanship RYA Astro Navigation
exams and cursing at trig functions? In practice its a lot of paper
and compasses.
Are turn signals supposed to be red? Or orange? Or let's place them below the level of the back bumper... for reasons. Some standardization would be nice.
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