oneiric
Re:CO2 Batteries That Store Grid Energy Take Off Globally
on Sunday December 21, 2025 @07:24PM (#46350054)
The fluid in high pressure storage is a liquid, making the storage much cheaper. Liquid N2 (most of air) would require over 40 times more pressure or cold temperatures. Purifying out CO2 or any gas is generally a negligible cost.
Re:Eid Mubarak
on Friday April 21, 2023 @11:38AM (#35655402)
The Hungry Judge Effect has been debunked. Not that your larger point is not valid.
Re:Dentistry is less scientific and more gratuitous than people think ...
on Monday June 20, 2022 @03:40PM (#31814756)
Also 2019
Con Feratu
What Do Protons Taste Like? [video]
Engineered Vasculature (3D Printed Organs)
Re:Hermeus announces plan to build the fastest aircraft in the world
on Monday May 13, 2019 @11:43AM (#19900411)
Hermeus Raises from Khosla for Mach 5 Plane
Re:Her Facebook life looked perfect. How social media masks mental ill...
on Thursday April 18, 2019 @01:45PM (#19693075)
For even more detail, there is a book.
http://www.madisonholleranfoundation.org
Re:Her Facebook life looked perfect. How social media masks mental ill...
on Thursday April 18, 2019 @01:43PM (#19693060)
Khosla Ventures Resources
Dyson Institute
Re:Using Flywheel Batteries to Charge Electric Vehicles in Ten Minutes
on Friday May 18, 2018 @11:17PM (#17106460)
About the "faster and faster" remark, turbines will only get to about double their nominal speed without load (called runaway).
Re:Using Flywheel Batteries to Charge Electric Vehicles in Ten Minutes
on Monday May 14, 2018 @09:38PM (#17070936)
A Russian hydroelectric turbine (not too different from a flywheel) stored horizontally in a "vault" (a dam) killed 75 people.
https://en.wikipedia.org/wiki/2009_Sayano%E2%80%93Shushenska...
Re:Using Flywheel Batteries to Charge Electric Vehicles in Ten Minutes
on Monday May 14, 2018 @09:18PM (#17070840)
Modern flywheels spin extremely fast in a vacuum, so supersonic is moot.
Re:Using Flywheel Batteries to Charge Electric Vehicles in Ten Minutes
on Monday May 14, 2018 @09:05PM (#17070793)
That is not a flywheel.
Re:Using Flywheel Batteries to Charge Electric Vehicles in Ten Minutes
on Monday May 14, 2018 @09:02PM (#17070777)
You are missing something (but don't worry, it is good to brainstorm like this).
At maximum speed (maximum energy storage) you want every part of the flywheel to be about to break. By introducing a non-structural material (liquid water), you have added mass but not the strength to get to higher speeds.
Imagine filling a bucket with water and spinning it around your body. All of the force to keep the bucket from flying away has to be held by the handle of the bucket. A better bucket flywheel would be all handle... Hopefully someone else can give you a better analogy.
Re:Using Flywheel Batteries to Charge Electric Vehicles in Ten Minutes
on Monday May 14, 2018 @08:57PM (#17070756)
Carbon fiber composite (not exactly plastic) is strong and light, which is what you want for a flywheel.
There a few more relevant expressions for flywheels to express that you want them to be on the edge of breaking at maximum energy storage. http://large.stanford.edu/courses/2010/ph240/wheeler1/
Learning to Play with Intrinsically-Motivated Self-Aware Agents
Re:Machine learning yearning by Andrew Ng
on Wednesday April 04, 2018 @03:01PM (#16757806)
Link from last year
https://news.ycombinator.com/item?id=13099135
and two years ago
https://news.ycombinator.com/item?id=11937847
Re:Ron Patrick's Street-Legal Jet Powered Volkswagen Beetle (2006)
on Wednesday March 07, 2018 @04:17AM (#16535216)
I remember getting a wide band oxygen sensor and tuning the gain in the new ECU (and by tuning I mean eventually realizing turning it all the way up minimizes steady state error). When I worked with the setup, it had no supercharger and was a lab demo for the newly reintroduced engines class. (getting to be almost a decade ago, I should go visit) Did you guys do research with it?
Speaking of engine research, kind of crazy what production engines do these days: http://www2.mazda.com/en/next-generation/technology/ https://www.infinitiusa.com/now/technology/vc-turbo-engine http://www.etagen.com/technology/
Re:Ron Patrick's Street-Legal Jet Powered Volkswagen Beetle (2006)
on Monday March 05, 2018 @11:24PM (#16526850)
Hey stergios, I replaced your (DOS?) code with a modern aftermarket ECU.
Re:Andrew Ng launches $175M AI fund
on Wednesday January 31, 2018 @01:01AM (#16271818)
RoBoHoN
Goat Life
Intel Optane in 2016
Enigma
This is close to happening. http://www.rmi.org/electricity_grid_defection
Re:Mobile Changes Everything
on Tuesday June 23, 2015 @03:46PM (#9767244)
"Computerization"
Did anyone here ever use that term? Is it appropriately grouped with railways, steel and software?