Hacker Newsnew | past | comments | ask | show | jobs | submit | ThrowAaaaway's commentslogin

Ok, but why?


Supersonic speed doesn't violate laws of nature or violates casuality. Superluminal speed in matter just produces Cherenkov's radiation.

At superluminal speed, we will be able to hit photons in any order, including reverse order, or emit photons and catch them later. Why this is a problem for casuality?


Yes, of course, 100 year old theories start to crack, because of all new data discovered recently, but we are far from a new theory to take it place.

Pilot wate theory is slowly move in, for example. In 20-50 years it may predict reality better in some cases than existing theories.


It's possible to use waste heat to evaporate water, to make drinking water from salt water, but it's unpractical to build datacenter on a shore, or pump salt water uphil to a datacenter.


Seems like Microsoft and Google are trying to make it work.

How Oceans are Being Used to Cool Massive Data Centres [2017]

https://www.vice.com/en/article/how-oceans-are-being-used-to...

Alternative Water Cooling Sources for Data Centers [2019]

https://www.ashrae.org/technical-resources/ashrae-journal/fe...

> While the temperature of surface ocean water can fluctuate seasonally, it can still be a valuable source of cooling. In hot regions such as the Middle East, surface seawater as high as 90°F (32°C) is used for condenser cooling with conventional systems. This is because even the higher temperature water is more efficient than air cooling and using potable water for evaporative cooling is not allowed due to water use restrictions.

Feasibility study and multi-objective optimization of seawater cooling systems for data centers: A case study of Caspian Sea [2021]

https://www.sciencedirect.com/science/article/abs/pii/S22131...

https://doi.org/10.1016/j.seta.2021.101528


Evaporating water is not the best way to desalinate water as it's inevitably energy intensive (though waste heat makes that less of an issue). It seems unlikely that datacenters will produce enough waste heat to supply populations with drinking water.


Sahara is full of silicate. Just make it green.


Soviet professors were poor, so it was easy to bribe them to get passing grade. To weed out bribers, some trickery was used by state, so bribers can pay for few years or cheat on tests and then fail an exam anyway. In my class, 36 enrolled, 11 graduated.

Later, people learned that and started to buy diploma: faster, cheaper, no risk of failing the final exam.


my advisor was at Kurchatov and MEPhI in 1989 and I never heard anything about this from him


Engineer from a regional institute received about 100 rubles, worker on a factory about 300 rubles (hehemon class), profesor up to 200 rubles, but profesors from top Moscow univs received 800-2000 rubles of hiden salary.


I heard something about 160 ruble a month student stipend. Although, maybe the parents were supplementing, but he said he had to pay them back for rent.


Maybe it was 80 come to think of it.


Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: