Spinning the same direction but the angular velocity is higher for lower orbits so the moon orbits faster than the outer ring.
- 0 Posts
- 55 Comments
Fermion@feddit.nlto Space@mander.xyz•A star has been destroyed by a wandering supermassive black hole8·2 months agoGravity would shred everything way before you noticed any cool time dilation effects. If somehow you became invincible, you still wouldn’t see a fast forward movie of the universe, the light falling into the black hole also experiences distortions and becomes so blueshifted that you could not “see” anything. Outside observers also could not see you or anything else slow down on approaching the event horizon. Any light emitted from an infalling object becomes so redshifted, the ability to observe an infalling object fades away extremely quickly and is not infinite.
https://math.ucr.edu/home/baez/physics/Relativity/BlackHoles/fall_in.html
Fermion@feddit.nlto Today I Learned@lemmy.world•TIL ancient Romans used communal toilets—stone benches with keyhole-shaped holes—where people sat side by side without privacy, chatting while waste drained beneath them using flowing water.English20·2 months agoTrue. If your gut has decided that its purpose is to hate you and everything you eat, then no amount of fiber will convince it otherwise.
IBS isn’t always lifelong though. I hope you can work out a diet that avoids angering the growling intenstinal gremlins.
Fermion@feddit.nlto Dull Men's Club@lemmy.world•I took down the giant widow maker from my back tree3·3 months agoHi-lift jacks as well.
Fermion@feddit.nlto PC Gaming@lemmy.ca•Young men are 'playing videogames all day' instead of getting jobs because they can mooch off of free healthcare, claims congressmanEnglish34·3 months agoIs he mad that young adults can stay on their parents’ health plan until age 26?
- Roll CD on edge
- Make terrible pun about it being a roller coaster
Fermion@feddit.nlto Resist: It's Time@fedia.io•EIon cries about firebornbings, calls Tim WaIz a jerk2·4 months agoI meant commenters on youtube. I should have specified.
Fermion@feddit.nlto Resist: It's Time@fedia.io•EIon cries about firebornbings, calls Tim WaIz a jerk8·4 months agoIs there a reason so many of the commenters (on youtube) are name+4 digits, or are those lazily named bot accounts?
Fermion@feddit.nlto Shitty Million Dollar Ideas@lemmy.dbzer0.com•Double the bottle size and halve the pills---GUARANTEED PROFIT GAME CHANGER!!!!!English3·4 months agoThe air pressure keeping the sealed bag inflated does help, underfilling does not. If anything, having more room inside the bag leads to more sloshing of the contents. Your example is apples to oranges. Chip bags ship in boxes with other bags of chips, not mixed in with a bunch of clothes or whatever you’re packing your chips with.
The giant bag stuffed full of tortilla chips I buy has less breakage than many of the underfilled bags I see, because the boxes don’t leave any room for the contents to slosh around.
Fermion@feddit.nlto Shitty Million Dollar Ideas@lemmy.dbzer0.com•Double the bottle size and halve the pills---GUARANTEED PROFIT GAME CHANGER!!!!!English9·4 months agoThe extra air is to keep the chips from getting crushed and breaking in transport, and other lies we tell ourselves to not feel the crushing weight of being ripped off at every turn.
Fermion@feddit.nlto Technology@beehaw.org•Prepare For Discord To Get Way Worse [Kotaku]5·4 months agoI only used it for desktop applications. That’s good to know.
Fermion@feddit.nlto Technology@beehaw.org•Prepare For Discord To Get Way Worse [Kotaku]17·4 months agoScreen sharing in signal seems to work reasonably well.
Fermion@feddit.nlto Technology@beehaw.org•Helion eyes Washington site for 2028 fusion reactor build10·4 months agoHelion is a completely different technology vs tokamaks which is what you’re thinking of. They pulse the plasma to create brief bursts of pressure/heating/fusion. They do already have their seventh prototype machine operational so while we can’t independently verify their claims, it’s probably not all bluster.
I have mixed feelings about their approach. They plan to use a deuterium and helium-3 fuel blend. That has a couple major advantages. Most of the reactions will be aneutronic and the energy is released in the form of highly energetic alpha particles and protons. The lack of a high energy neutron is a huge advantage for safety and longevity of a reactor. High energy neutrons are hard to shield from and they cause most materials to get brittle and weaken. Netrons are not good for personnel to be around and they can leave some materials radiactive making reactor maintenance/disposal costly. The other advantage is that since all the energy is released as kinetic energy in charged particles, they don’t have to try to absorb high energy photons or neutrons into a water blanket to drive a steam turbine. Instead, the kinetic energy results in an electromagnetic pulse that can be harvested by the same magnets that constrict the plasma to begin with.
Sounds amazaing, right? So why doesn’t everyone use this approach? Helium is rare, but Helium-3 is especially rare, making up only about 20 parts per million of helium found in geologic deposits. So simply put, it is currently infeasible to use Helium-3 at scale. Helium-3 can be collected as a byproduct of breeding tritium for use in nuclear warheads. Enough helium-3 is produced for some demonstration reactors, but any real amount of demand will quickly outpace what the DOE produces.
Helion plans on breeding their own Helium-3 in Deuterium-Deuterium reactors they will operate. However D-D reactions are not aneutronic. So all the materials lifespan/shielding/ maintenance nightmares that come with operating a nuclear reactor will still apply. That means operators will have to buy very expensive fuel from Helion indefinitely. Helion doesn’t exactly deny this drawback, but I really dislike how much they gloss over it in their public communications.
Here’s a video tour of their test facilities that explains the basics of their approach. https://youtu.be/_bDXXWQxK38
I’m inclined to think they’ve demonstrated enough results that they are likely to be able to build a working unit quickly, however, that would still be a long way off from creating any sort of sustainable supply chain that would be a viable option for anyone beside datacenters.
Fermion@feddit.nlto Today I Learned@lemmy.world•TIL In the USA, PMI Can Be Canceled With a Good Payment HistoryEnglish1·5 months agoPMI specifically only applies when you don’t have a 20% down payment. If your income is consistent and high enough to qualify you don’t really need to wait until you save up a big down payment.
Nicely done. I recommend keeping some two part epoxy on hand for projects like this. Epoxies tend to be much stronger than any single part adhesives.
Fermion@feddit.nltoHome Improvement@lemmy.world•Refrigerator Power Consumption / Plugging into UPS [Question]3·6 months agoYour UPS might not protect from brown outs. You would need an online double conversion or line interactive ups to protect from brown outs. Many consumer ups’ are just standby.
Fermion@feddit.nlto PC Gaming@lemmy.ca•Nvidia's new RTX 5070 will deliver 'RTX 4090 performance at $549' when it launches in FebruaryEnglish1·6 months agoIt’s been a while so I’m not sure I remember but probably balanced with dlss on. That game doesn’t expose much for dlss specific settings in the ui.
Fermion@feddit.nlto PC Gaming@lemmy.ca•Nvidia's new RTX 5070 will deliver 'RTX 4090 performance at $549' when it launches in FebruaryEnglish5·6 months agoIt was the circular oasis level of talos principle 2 on a WQUXGA display. I didn’t capture screenshots. https://eip.gg/guides/the-talos-principle-2-south-3-star-statue-puzzles/ If you look at images 9 and 14, the little prism that the red beam connects to was completely erased by dlss. I had to just scan around until the icon for establishing a connection popped up.
I know you just copied the youtube title, but the title is obnoxiously pretentious.