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Same, wanted to read it, but ended up just being flabbergasted about the image-rendering, was it my screen? was it intentional, by design? Just closed the page without reading a wo…

Fun fact, there are databases of the exact frequency vs. time and it can be used to accurately time stamp audio/video recordings by correlating the ~50/60hz noise in the recording …

A political bet, with enough funding it might make it so… https://www.washingtonpost.com/climate-solutions/japan-hydro...

This reminded me of the extended range with reversed ski box for tesla. https://electrek.co/2020/03/24/tesla-model-3-roof-rack-box-r...

No sure how these guys ( https://www.xethru.com/ ) are doing financially, but they sell development kits for respiration sensors etc.

Microplastics from car tyres seems to be a big source as well: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5664766/

Protactinium

After a quick napkin calculation+google it seems the sun has around 20kW of power per square centimeter. So not entirely unfeasible that a cooler star, or a nuclear reactor is clos…

The issue with the «chopping» is noise level. Counter rotating propellers are more efficient than a single propeller. «Contra-rotating propellers have been found to be between 6% a…

“Simply put, unleaded fuel burns less smoothly than leaded and the toluene and benzene, which is added to the fuel to act as a lead substitute, burns to form what are called peroxi…

Zero Kelvin is still a different league of special scientifically speaking.

Resistive power losses in the battery pack, drive inverter, motor, and associated wiring are proportional to the square of the current. Doubling the motor current doubles the torqu…

Actually most new ( https://www.transportenvironment.org/press/new-petrol-engine...

Apparently this discussion has been on here before: https://news.ycombinator.com/item?id=11896883

ehh, muddy.ashes.pardon maps to US Holocaust Memorial Museum... ( https://www.ushmm.org/ ) insensitive for sure, is that just a coincidence?

Even if we covered the earth in windmills, we'd still only affect the lowest 100-200m of the atmosphere. And windmills can only extract 50% of the winds energy. I'm thinking a fore…

Me five. This isn't the first time I've had this happen.

I'm happy with my Yaesu VX-6R, bought it 11 years ago, same day I got my license. Incredibly sturdy and amazing build quality, submersible to 1 meter, die-cast aluminium and O-ring…

If each cell is connected to the bus bars with fuse wire (like in the Tesla battery pack for instance) this connection diagram seems valid. Same way it is connected in the car/powe…

I'm a bit tired of all these CO2 comparisons regarding electric vehicles. If we put the CO2 emissions aside, there are so many other benefits moving to EV's. Especially reduced loc…

[0] Estimate about half of the particulate emissions comes from non-combustion sources (brake wear, tire/road wear, dust re-suspension). Interestingly 16-55% of these particle emis…

I'm trying https://www.jottacloud.com now, they have an unlimited plan for ~$70/year. Funny story; They previously had a clause in the terms about restricting storage space for use…

Just be sure to read the datasheet carefully. That particular capacitor is only ~120uF at typical 3.3V DC voltage. At 5V DC (which isn't really advisable for a 6.3V rated cap) it i…

This: https://www.lhup.edu/~dsimanek/museum/DDWFTTW.htm

There is a fascinating BBC-documentary about chemical warfare history and the british Porton Down military research facility, hosted by Michael Mosley [0]. There is a part where th…