Is there any way to filter for local introductions? I'm often curious when I see new members joining, but rarely catch if/when they make an intro.
David
- 29 Followers
- 67 Following
- 42 Posts
Dad, gamer, and scientist by occupation. Outdoor enthusiast and nature lover by upbringing. I enjoy learning new things.
Mark McCaughreanDraw a one centimetre square on your finger & hold it towards the Sun 👆
Now consider that some 60 billion neutrinos hit it every second, created by nuclear fusion in the solar core 500 seconds ago 🙀
Even if it’s nighttime & your finger has to point down through Earth’s surface – they don’t care 🙃
But if it makes you feel better, there are only about 2 solar neutrinos in each cubic centimetre of you at any given instant 🤷♂️
Well, plus another 300 from the Big Bang 😬
Last year we bought a heat pump hot water heater, and saved $900 between the tax refund and the DCSEU rebate, and it's only going to be better this year.
There's enough tax incentives out now for energy efficiency purchases that everybody should be thinking about upgrades:
www.energy.gov/save
DC residents should also double check with https://www.dcseu.com/ for rebates.
Rod Hilton
Love it when you make an appointment for an EV recall but you can't get it done because the dealership you booked service at isn't equipped for EVs.
Guess they're still pretty far from mainstream after all ...
Corey S PowellIn this extended lightning video, you can see positive electrical discharges rising from lightning rods to meet the huge, downward negative strikes.
Full paper: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022GL101482 #lightning #zap
Full paper: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022GL101482 #lightning #zap
franco_vazza@coreyspowell
now what should poor astronomers do:
~70% of the universe energy density is unknown
~25% is equally unknown dark matter
...if also 99% of the rest of 5% of ordinary matter gets spooky as well, we are so doomed!
When you step on a scale, here's where your weight comes from.
gluonic field energy: 37%
motion of quarks: 32%
anomalous gluonic contribution: 22%
virtual quark condensate: 9%
-- The particles themselves account for less than 1%, within the rounding error.
#physics
gluonic field energy: 37%
motion of quarks: 32%
anomalous gluonic contribution: 22%
virtual quark condensate: 9%
-- The particles themselves account for less than 1%, within the rounding error.
#physics
We held my wife's annual cherry blossom birthday picnic over the weekend. So glad the weather and cherry trees came through in the end, but they always do. So many good places to see flowering trees in the city without the crowds.