Lmst

Oh yeah! I got to play with #LiquidNitrogen at work the other week. It was a strike off my bucket list!

An off-white vacuum flask containing Liquid Nitrogen sits on a dolly in front of a loading bay door.

The flask is branded with MVE Lab 30, and a MDS safety sticker.

#LiquidNitrogen has been dumped recklessly by some restaurant in #FloodWater on #Pallavaram - #Thoraipakkam Radial Road.

https://buff.ly/4fYmyw4

Mixing up a batch of liquid nitrogen ice cream

https://media.cooleysekula.net/videos/watch/148ff599-d947-4c03-895f-04bd7619e06e

The addition of liquid nitrogen during the freezing process of ice cream freezes the ice cream mixture almost instantly, resulting in the formation of much smaller ice crystals, which creates an exceptionally smooth and creamy texture.

Happy National Ice Cream Day!

#science #sciencefacts #icecream #liquidnitrogen #nationalicecreamday

⚠️ Lowongan Pekerjaan

Kami mencari individu muda yang bersemangat untuk bergabung dengan PT Duta Surya Sukses.

Silahkan kirimkan lamaran pekerjaan anda ke QR Code yang tertera pada postingan ini. 😊

#marineindustry #DutaSuryaSukses #GasSupply #HolidayPreparation #liquidoxygen #liquidargon #liquidnitrogen #liquidco2 #batamliquid #liquidkepri #gasbatam #gaskepri #batam #kepulauanriau #airseparationplant #isotank #lowker #lokerbatam #batam #lowongankerja

Neopixels? Try Liquid Nitrogen to Color Shift Your LEDs Instead https://hackaday.com/2023/11/11/neopixels-try-liquid-nitrogen-to-color-shift-your-leds-instead/ #liquidnitrogen #conduction #cryogenic #electrons #LEDHacks #bandgap #quantum #valence #photon #led

Referenced link: https://phys.org/news/2023-02-liquid-nitrogen-spray-stubborn-moon.html
Discuss on https://discu.eu/q/https://phys.org/news/2023-02-liquid-nitrogen-spray-stubborn-moon.html

Originally posted by Phys.org / @physorg_com: http://nitter.platypush.tech/physorg_com/status/1630604757239824386#m

#Liquidnitrogen spray could clean up stubborn #moondust https://linkinghub.elsevier.com/retrieve/pii/S0094576523000681 https://phys.org/news/2023-02-liquid-nitrogen-spray-stubborn-moon.html

Liquid Nitrogen Isn’t Suitable For Steam Engines

Liquid nitrogen is fun stuff to play with, as long as you're careful and avoid freezing your own fingers off and shattering them on the workbench. As the liquid turns to gaseous nitrogen at around -196 C, [The Action Lab] figured that it could be used to propel a simple steam engine at room temperature. Testing this out had amusing results.

The device under test is a Hero's Engine, otherwise known as an aeolipile. This consists of a hollow sphere filled with water, fitted with a series of nozzles that shoot out steam when the vessel is heated. Via the rocket principle, this causes the device to rotate about its axis.

When filled with water and heated with a candle, the aeolipile spun at up to 2520 RPM. [The Action Lab] next tested it filled with water in a vacuum chamber, with the low pressure causing the water to boil at room temperature. The effect was less impressive however, with the engine spinning at a much slower rate.

The best result was with liquid nitrogen inside the engine. With the nitrogen quickly boiling at room temperature, the aeolipile quickly spun up to a great speed. The engine stand had to be steadied to avoid it tipping over, before the seal at the top of the engine blew off from overpressure.

We'd love to see the same experiment done with a piston-type steam engine, too. Video after the break.

#science #herosengine #liquidnitrogen #steamengine

Hackaday Links: May 30, 2021

That collective "Phew!" you heard this week was probably everyone on the Mars Ingenuity helicopter team letting out a sigh of relief while watching telemetry from the sixth and somewhat shaky flight of the UAV above Jezero crater. With Ingenuity now in an "operations demonstration" phase, the sixth flight was to stretch the limits of what the craft can do and learn how it can be used to scout out potential sites to explore for its robot buddy on the surface, Perseverance.

While the aircraft was performing its 150 m move to the southwest, the stream from the downward-looking navigation camera dropped a single frame. By itself, that wouldn't have been so bad, but the glitch caused subsequent frames to come in with the wrong timestamps. This apparently confused the hell out of the flight controller, which commanded some pretty dramatic moves in the roll and pitch axes -- up to 20° off normal. Thankfully, the flight controller was designed to handle just such an anomaly, and the aircraft was able to land safely within five meters of its planned touchdown. As pilots say, any landing you can walk away from is a good landing, so we'll chalk this one up as a win for the Ingenuity team, who we're sure are busily writing code to prevent this from happening again.

If wobbling UAVs on another planet aren't enough cringe for you, how about a blind mechanical demi-ostrich drunk-walking up and down a flight of stairs? The work comes from the Oregon State University and Agility Robotics, and the robot in question is called Cassie, an autonomous bipedal bot with a curious, bird-like gait. Without cameras or lidar for this test, the robot relied on proprioception, which detects the angle of joints and the feedback from motors when the robot touches a solid surface. And for ten tries up and down the stairs, Cassie did pretty well -- she only failed twice, with only one counting as a face-plant, if indeed she had a face. We noticed that the robot often did that little move where you misjudge the step and land with the instep of your foot hanging over the tread; that one always has us grabbing for the handrail, but Cassie was able to power through it every time. The paper describing how Cassie was trained is pretty interesting -- too bad ED-209's designers couldn't have read it.

So this is what it has come to: NVIDIA is now purposely crippling its flagship GPU cards to make them less attractive to cryptocurrency miners. The LHR, or "Lite Hash Rate" cards include new-manufactured GeForce RTX 3080, 3070, and 3060 Ti cards, which will now have reduced Ethereum hash rates baked into the chip from the factory. When we first heard about this a few months ago, we puzzled a bit -- why would a GPU card manufacturer care how its cards are used, especially if they're selling a ton of them. But it makes sense that NVIDIA would like to protect their brand with their core demographic -- gamers -- and having miners snarf up all the cards and leaving none for gamers is probably a bad practice. So while it makes sense, we'll have to wait and see how the semi-lobotomized cards are received by the market, and how the changes impact other non-standard uses for them, like weather modeling and genetic analysis.

Speaking of crypto, we found it interesting that police in the UK accidentally found a Bitcoin mine this week while searching for an illegal cannabis growing operation. It turns out that something that uses a lot of electricity, gives off a lot of heat, and has people going in and out of a small storage unit at all hours of the day and night usually is a cannabis farm, but in this case it turned out to be about 100 Antminer S9s set up on janky looking shelves. The whole rig was confiscated and hauled away; while Bitcoin mining is not illegal in the UK, stealing the electricity to run the mine is, which the miners allegedly did.

And finally, we have no idea what useful purpose this information serves, but we do know that it's vitally important to relate to our dear readers that yellow LEDs change color when immersed in liquid nitrogen. There's obviously some deep principle of quantum mechanics at play here, and we're sure someone will adequately explain it in the comments. But for now, it's just a super interesting phenomenon that has us keen to buy some liquid nitrogen to try out. Or maybe dry ice -- that's a lot easier to source.