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2
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17
Joined
2 yr. ago

Ask Lemmy @lemmy.world

Why do many hotel ceilings (in the US) look like this?

1987

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  • When I found out they had lead last year, I went to work with the cup to confirm. This is a handheld XRF, which depends on the specific spacing of electrons in atoms to determine the identity. Not much to it other than point and shoot! (with shielding)

  • I have an HDMI switch that starts acting up if the power cable gets loose. Why does the power cable get loose? No idea, but it's also a cheap nobrand switch. This probably isn't your issue, but try pushing the barrel connector in more or try a power supply that supports a higher current (same output voltage). I only mention it because I only managed to "fix" my switch by noticing it was just a mm out of the jack.

  • I'm assuming if the syringe was wet before being placed in the microscope, the vacuum of the chamber would cause most of the water in the plasma to vaporize. The remaining salts and compounds would be much smaller than the red blood cells. The density of the red blood cells would be much larger than any remaining plasma, so the bulk of your backscattered electrons will be coming from the cells and needle, making the plasma essentially transparent. This is a fairly low magnification image for SEM, but that's how you get such fantastic depth of field.

  • Did you change something in the license file yourself? Check your yay cache and perhaps delete the cached files for this package.

    While there seem to be other issues with the PKGBUILD (typo for example), this seems like a problem with your local setup and not the package. Note that using AUR helpers like yay are not supported, so check if the package builds correctly manually.

  • This one time at the Champaign Blues, Brews, and Barbecues festival, I opened a port-a-potty and there was a woman on top of a man inside having some fun, so I apologized and shut the door.

  • I plan on installing some water to feed my garden later this summer. I was considering PVC, but is this a better case for metal? How does the plastic handle the UV from the sun? I thought outdoor might be gray PVC, but I was thinking underground PVC with galvanized above.

  • homeassistant @lemmy.world

    Air Quality Template Sensor

  • I really enjoyed Space Station Silicon Valley for the N64. It turns out there was a bug in the original game so you could never complete it 100%. A couple years ago, I purchased an Everdrive (https://krikzz.com/our-products/cartridges/ed64x7.html) so I could patch the ROM and play on original hardware. Pair this with some new wireless controllers and it's the perfect experience.