What about the use of pumped hydro for energy storage?

posted by eric3579 6 days 16 hours 14 minutes ago • 745 views • 16:53

Watch live Perseverance landing https://youtu.be/gm0b_ijaYMQ

posted by eric3579 1 week 1 day ago • 926 views • 19:42

Racing Industry trade show and thought I'd share the 10 best race engines

posted by bobknight33 2 weeks 4 days ago • 4 views • 16:11

An amazingly thorough deep dive into the acoustic engineering, materials science, and construction of a beautiful pair of speakers. "We construct a pair of large Voigt speakers. I explain the principles... continue reading

posted by blacklotus90 3 months 4 weeks ago • 285 views • 52:56

Learn how solar works and how a long time mystery power loss was finally understood and solved.

posted by eric3579 5 months ago • 1,257 views • 16:54

YouTube description: Delta Technical Operations in Atlanta fixes commercial jets for Delta and 150 customers, including the military and other airlines. The bustling operation runs 24-7, repairing everything... continue reading

posted by Aard Vark (oritteropo) 6 months ago • 948 views • 8:15

https://www.iter.org/ In southern France, 35 nations* are collaborating to build the world's largest tokamak, a magnetic fusion device that has been designed to prove the feasibility of fusion as a... continue reading

posted by eric3579 7 months ago • 870 views • 7:59

Kill the anvil!!

posted by bjornenlinda 7 months 4 weeks ago • 13 views • 6:42

There's been a few stories recently about detonation engines and how they're supposed to be superior to traditional jet or rocket engines. So, what is a detonation engine, what's the difference between... continue reading

posted by newtboy 9 months 2 weeks ago • 21 views • 11:14

NASA's current fleet of spacesuits was built in 1974, and each was reported to cost between $15 million and $22 million. Today, that would be about $150 million. Having not built any new mission-ready... continue reading

posted by bobknight33 9 months 3 weeks ago • 100 views • 10:41

In the debut episode of the Logistics of D-Day we explore the logic and planning that resulted in Normandy being chosen as the location for the largest amphibious invasion in the history of human kind. -yt

posted by eric3579 9 months 4 weeks ago • 792 views • 14:54

On a hike looking for rare limestone endemic plants in Death Valley, we spotted the wreckage of a plane! After several hours of hiking and many interesting plants, we managed to scramble over to the wreck.... continue reading

posted by eric3579 10 months ago • 1,768 views • 5:01

YouTube description: People use boats for all kinds of reasons, and in the same way, there are all kinds, shapes, sizes, and ages of locks used for waterway navigation across the world. Freight is big... continue reading

posted by Aard Vark (oritteropo) 10 months 3 weeks ago • 233 views • 10:37