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The Cool Science Stuff Thread

A prototype flying car has completed a 35-minute flight between international airports in Nitra and Bratislava, Slovakia.

The hybrid car-aircraft, AirCar, is equipped with a BMW engine and runs on regular petrol-pump fuel.

Its creator, Prof Stefan Klein, said it could fly about 1,000km (600 miles), at a height of 8,200ft (2,500m), and had clocked up 40 hours in the air so far.

It takes two minutes and 15 seconds to transform from car into aircraft.
Click to expand...
https://www.bbc.com/news/technology...eadline]-[news]-[bizdev]-[isapi]&xtor=ES-213-[BBC%20News%20Newsletter]-2021June30-[technology]
 
Way back in the day President Ronald Reagan initiated the Strategic Defense Initiative (SDI), an anti-ballistic missile system. Lots and lots of money flowed into tech to ‘make it work’. A few years later, I read a book about some of those techs, including one that talked about making really large computer chips. The issue, generally, is that the bigger you make chips the more errors they will have, making them unreliable. For decades I have wondered why this tech never surfaced and GPU and CPUs are still like the size of my fingernail. Now, there is reporting that Cerebras has made processor the size of a dinner plate.
Cerebras’ CS-2 brain-scale chip can power AI models with 120 trillion parameters

Cerebras says it can now run a neural network with 120 trillion connections,...The largest AI models in existence today have about a trillion connections
 
Judging by the government's recent acknowledgement that UFOs are in fact real... and the lack of any explanation after spending umpteen millions of bucks on jet fuel, developing high speed aircraft and losing a few scores of pilots to boot, the conclusion that 'they are here but we don't know what the fuck they are, and pretty much don't give a rat's ass either' confession kind of left me in dry hump. Guess I'm going to take the tin foil hat out of the garbage and start wearing it again.
 
astuffedshirt_perv said:
Way back in the day President Ronald Reagan initiated the Strategic Defense Initiative (SDI), an anti-ballistic missile system. Lots and lots of money flowed into tech to ‘make it work’. A few years later, I read a book about some of those techs, including one that talked about making really large computer chips. The issue, generally, is that the bigger you make chips the more errors they will have, making them unreliable. For decades I have wondered why this tech never surfaced and GPU and CPUs are still like the size of my fingernail.
Click to expand...

Power. And, by extension, heat. CPU and GPU chips are getting smaller and smaller because they use less of one and produce less of the other. Plus form factor. Who wants a laptop or even a gaming rig the size of a Volkswagen Beetle?
 
Sean said:
Who wants a laptop or even a gaming rig the size of a Volkswagen Beetle?
Click to expand...

Professionals, that's who. The company points out that deep learning currently uses cpus/gpus designed for gaming. This is because they are available, not because they are designed for the task at hand. Just like basement-sized supercomputers, giant chips could place tremendous computing power at the fingertips of professionals.
 
Women don't want to introduce their current parter to large breasted women

https://psycnet.apa.org/record/2021-85502-001

Abstract

Women’s breasts are considered attractive and sexually appealing, perhaps due to their residual reproductive value. However, most research has focused on their intersexual selective display. The current study investigated women’s perceptions of women’s breasts when primed with an intrasexual competition prime. Across two studies, women (N = 467) were randomly assigned to a partner threat condition or control. They were asked to rate women’s breasts that had been manipulated for their size, ptosis (i.e., sagginess), and intermammary distance (i.e., cleavage). Women with large breasts were rated as more attractive, fertile, reproductively successful, likely to befriend, threatening, and they were rated as less likely to be introduced to a current partner. More importantly, these ratings were influenced by the interaction between breast size, intermammary distance, and ptosis. The findings contribute to how women’s breasts may be perceived from an intrasexual competitive perspective. (PsycInfo Database Record (c) 2021 APA, all rights reserved)
 
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