Take numbers with a grain of salt, e.g., this link says a 7200RPM 160GB SATA drive from 2004 is $107, or about $0.67/GB, instead of the $5 claimed in post.

Not at all in this case though! Or rather, it depends on your perspective.

“Why doesn’t electricity leak out the outlet?” is a good question, if you know nothing about electricity.

“Why doesn’t electricity leak out the outlet?” is a little stupid, if you know a little about electricity.

“Why doesn’t electricity leak out the outlet?” is a great question if you know a bit more about electricity (because it does leak out, it’s just that 50/60Hz doesn’t couple to freespace well unless you have a colossal antenna).

As to this question, light in moving media: https://preprints.opticaopen.org/articles/preprint/Fizeau_Experiment_Investigating_the_Speed_of_Light_in_Moving_Media/25441108?file=45147313

It’s a matter of perspective and use — high density one place means you can have open space somewhere else, for a given amount of land.

I’d much prefer a few large dense housing complexes, surrounded by green space, than suburban sprawl.

Sounds like maybe you want acoustic impedance ? Just like optical index mismatch, or electrical impedance mismatch, you get reflections at discontinuities. Neat stuff!

Not exactly sure what you mean by air-water-air “dampening,” but my suspicion is that you’re referring to sound being reflected at each interface, so the transmission is reduced. Antireflective coating, index matching, impedance matching are all rich topics in physics and electronics!

50kW class laser.

Another source claims 1um wavelength with individual 1.5kW lasers in a hex pattern — unclear if it’s a phased array (would be awesome) or just trained on the same target (source mentions they are “combined using a mirror” so probably the latter).

Sounds like maybe high power YAG?

I just want a button that rewinds 10-15s, turns on subtitles, and then turns them off when it catches up again. It’s a pattern I do manually with some regularity.

I suppose with Jellyfin/OSS, this is something I could implement myself if I was so inclined…

Hmmm, I’m not sure I understand…

A large explosion every second has units of power, not energy. So to me this is suggesting that the train is putting out power equal to its kinetic energy per second. That’s certainly not the case — it implies that the train is powerful enough to accelerate to the speed in 1s, which is definitely not true.

But that’s just my interpretation.

I don’t think your units make sense — kinetic energy has units of energy, but “kg TNT per second” is power (about 4MW). (I think just remove the “every second” and it’s correct?)

Edit: parent edited comment.

It’s maybe not that bad for a “normal” person, but Bill Nye was a real hero to a lot of young folks, be they aspiring STEM types, science enthusiasts, or just curious people. So to see him sell out — abandoning scientific integrity for a quick buck — was pretty disheartening.

You can!

Getting it published is another matter though…