tinwhiskers

I think a mobile phone camera is vastly superior to these, although might not be great at night vision for the reasons you said, but is it entirely crazy to not just use a spare phone? It has built in backup power, can store videos locally if there is an internet outage, and can use its own data connection if wifi is not available.

Actually, I am very lazy, thank you.

You can use superconductors to create Josephson junctions, which can be used for standard logic operations (but also useful in quantum computers). These junctions are much more efficient and much faster than transistors.

This particular superconductor will not be useful for transmitting power because the effect breaks down at very low current limits in this material, but it will be very useful for studying superconductors.

So contrary to what you said, this will in fact not be useful for power transmission, but could be useful for CPUs and GPUs, and could lead to computers that are hundreds or thousands of times faster and more efficient than what we have today.

To be fair this material may never see a practical use though.

The UFO craze probably peaks in summer because people go outside on summer evenings. Outside there are things that they are not used to seeing, like planes, satellites and planets.

A less divisive goal of reducing your consumption is a good first step to get mental uptake. People are not ready to be told to stop entirely. If we could set a goal to reduce our consumption by 50% that would an awesome start.

One of the things that weighs me down is posts making me dwell on the things that weigh me down.

"Despite being so common in English as to be known as the "Chinese curse", the saying is apocryphal, and no actual Chinese source has ever been produced." - Wikipedia

I'm located in a van in New Zealand so I only use mobile data. I pay NZ$40 (US$25) per month for "unlimited" data, which is all I can eat but capped at 1Mbps. I can stream 720p barely, but I mostly torrent. I typically use about 60-80GB a month.

OruxMaps (android) supports several navigation methods, kml overlays, offline maps, various online and custom maps, good tracking, routes, gps, etc, etc. Waaay better than Google maps - although it can also happily use Google maps.

I think you're right there. My bad.

They say the second layer retains 93% of the performance of the first using reflected light, making it 20% efficient, so, yes they are added in that case.

TLDR; the front side is 23% efficient, and the rear side 20% efficient.

They don't actually give an overall efficiency but it implies a total of 43%. They compare this to typical panels also at 23% efficient, so it's really remarkable if true. Other emerging solar tech is up to about 32% but if that could also benefit from multiple layers then total efficiency could become insane.

Seems a little too good to be true, really, but great if so.

Edit: Yeah, I don't think these efficiencies can be added like that. I guess the overall efficiency will depend on how reflective the ground under the panels is, and they will extract 20% of that. Maybe that's why they don't give an overall rating.