lenses cause chromatic abberations though, the red/yellow halo around the beam you see in his cheaper version at the end.
65 karma · joined November 15, 2019
Due to them being so efficient, most electric cars can't use waste heat like internal combustion cars, which means they need a separate electrical heater which of course has an impact on range.
This article: https://www.marketwatch.com/story/cold-weather-saps-electric...
> The automobile club tested the cars at 20 degrees and 95 degrees, comparing the range to when they were tested at 75 degrees Fahrenheit, according to a report on the study.
> At 20 degrees, the average driving range fell by 12% when the car’s cabin heater was not used. When the heater was turned on, the range dropped by 41%, AAA said.
> At 95 degrees, range dropped 4% without use of air conditioning, and fell by 17% when the cabin was cooled, the study found.
Its all kind of small things like this that make Linux grind just a little bit more for me than Windows, not saying Windows doesn't have its issues though, just a lot less.
My hope is that this will lower the cost of access to space with another magnitude, which should allow a serious scale up of the amount of astronomy done from space.
> Shotwell said millions of people in the U.S. pay $80 per month to get “crappy service.” She didn’t say whether Starlink will cost more or less than $80 per month but suggested that would be a segment of the public the company would target as well as rural areas that currently have no connectivity.
> if you're at A, you can travel faster than the speed of light and arrive before B happens
But if we assume A and B happen "at the same time" and your frame of reference is closer to A than B right? As the light showing B happening is still traveling to the observer while A has already arrived.
If that's the case,
> Then, after B happens, you can travel back to before A happens.
Doesn't make sense, If the following happens:
> Traveler starts at A, jumps the wormhole to point B and immediately jumps back to A, arriving 10 seconds after leaving A.
The observer would see:
> Traveler starts at A, arrives back at A + 10 seconds and a while later, they are seen exiting and entering the wormhole at B while also being visible at A (Assuming they didn't do anything after exiting there)
We are talking about observers seeing wrong order (leaving the wormhole at point B before entering at point A), but that's because they are observing everything at a delay or something like that, but I don't see any time travel happening in this example or any order of flying through wormholes that I can come up with.
Both through telescope as through the wormhole, the clocks can be observed to go slower. After 20 years at A, both the telescope as observation through the wormhole show 10 years have passed at B.
If we don't stop B from spinning: The regular space traveler takes 5 years, as observed from A, to reach B, so reaches B at A:25 years, B:12,5 years. If they leave immediately after arrival, they'll end up again at A at A:30y, B:15y. Otoh, the wormhole travel leaves at A:20y ends up at B at 10y and gets back to A immediately: A still at 20y and B at 10y. Mixed travel:regular travel starts at A:20, B:10y, reaches B at A:25y, B:12,5 and jumps back through the wormhole at the same time as seen from A and B.