mkwt

joined 3 years ago
[–] mkwt@lemmy.world 5 points 1 week ago

Estimating the state of charge on a lithium battery is extremely complicated and difficult. And they stopped showing the numbers earlier because they didn't want you to see how inaccurate they were.

Nowadays, the models are better and more sophisticated, but the tradition continues.

[–] mkwt@lemmy.world 21 points 2 weeks ago (2 children)

Depends probably on the nature of what "forwarded the costs" means.

If the business collected the costs from you and then forwarded them to CBP while acting as your agent, then you can demand a refund from them or sue them.

If you agreed to purchase goods for one price while also agreeing to pay a separate "tariff reimbursement fee" in exchange for purchasing the goods, you're probably shit out of luck.

Various shades in between might be arguable or litigatable one way or another.

[–] mkwt@lemmy.world 11 points 2 weeks ago (1 children)

If you already received your item(s) and you don't immediately need to do any more business with them, it sounds like they don't have a lot of leverage to get you to pay.

Sounds like that might have been a screw up on their part.

[–] mkwt@lemmy.world 20 points 2 weeks ago (1 children)

No. But they do occasionally advertise their TV and movie rental services as videos in the feeds.

[–] mkwt@lemmy.world 118 points 2 weeks ago (10 children)

If you, as a consumer, directly paid one of the illegal tariffs, you can get a refund via the shipper who acted as an agent for you.

For example, here's the form if you shipped something over the border using UPS and paid an illegal tariff to get it released from customs.

[–] mkwt@lemmy.world 5 points 2 weeks ago* (last edited 2 weeks ago)

Year 1804. Close.

[–] mkwt@lemmy.world 1 points 1 month ago (1 children)

If you read the chart on that Wikipedia article carefully, the estimated temperature profile is based on data from two Apollo missions.

All of the Apollo missions spent all of their surface time during the lunar morning, relatively early into the 14-day lunar day. They did this partially because the cooling systems couldn't cope with the full heat of the day, and partially to ensure good backlighting during the landings.

So there is going to be some "diurnal" surface heating and cooling that is probably modeled but not measured.

[–] mkwt@lemmy.world 4 points 1 month ago

Your car radiator is actually using convection to convect heat into the air.

The spacecraft radiators use radiation to dump heat by emitting infrared photons. Photons do not require a medium. This type of radiator works by maximizing the area of hot surface exposed to empty space (which has an effective temperature of 3 K). They have to be pointed into a dark area and away from the sun. There's no advantage to fins, because you want to maximize area perpendicular to the dark sky.

Both devices are called radiators, but they are different kinds of devices.

[–] mkwt@lemmy.world 9 points 1 month ago

Solar sail effect is going to be dwarfed by regular atmospheric drag in low earth orbit. At perfect right angles the radiation pressure on the panels is 4.5 micro-Pascals. Meanwhile, in low orbit there's enough residual atmosphere to generate a dynamic pressure (for drag) of 5 milli-Pascals, give or take (and strongly depending on the space weather).

So atmospheric drag is around 1000 times more than photon pressure. And the drag is big enough to be noticeable over weeks and months, requiring regular boosts to stay in orbit.

[–] mkwt@lemmy.world 6 points 1 month ago (3 children)

You could put em on the moon with a heatpump into the ground.

The interior of the moon is not super cold. You could still run a heat pump, but I don't know what the conductivity is like.

[–] mkwt@lemmy.world 2 points 1 month ago (1 children)

This ruling confirms that there is no other legal path to obtain that data which isn't a warrant.

The supreme court ruling doesn't go this far.

The ruling says that a search occurred when LEOs obtained the geofenced location data from a service provider. The case was sent back down to the circuit court to determine whether or not a warrant was required.

There are various exceptions that allow the government to conduct warrantless searches under the 4th amendment. For example:

  • the "frisk" in a Terry stop to search for weapons.
  • search with consent
  • search incident to arrest
  • hot pursuit and exigent circumstance allow police to follow suspects into a place, but not usually to then go looking for stuff.
  • searches within the (generous) border zone for border enforcement
  • searches at airport security and similar contexts
  • public roadway DUI checkpoints and other road safety checkpoints that stop all drivers.

It's not obvious that any of those apply to this case, but maybe they do. The circuit court will decide.

view more: next ›