Hi!

My previous/alt account is yetAnotherUser@feddit.de which will be abandoned soon.

  • 2 Posts
  • 564 Comments
Joined 2 years ago
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Cake day: June 1st, 2024

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  • that would kill almost anything else

    Guess what: It’s fact check time!!

    Anthrax: ❌

    Most birds are naturally resistant to anthrax because of their higher body temperature.

    Botulism (actually botox, botulism is the illness caused by botox. You can’t quite eat an illness): ✅

    “Botulism is one of the most toxic substances in the world, and [turkey vultures’] guts are filled with this bacteria, which apparently has no effect on them,” says Graves.

    (Yes, the article made the same mistake)

    Rabies: ❌

    All warm-blooded species, including humans, may become infected with the rabies virus. Birds were first artificially infected with rabies in 1884; however, infected birds are largely, if not wholly, asymptomatic, and recover.

    Cholera (actually avian cholera, which is distinct from “normal” cholera): ❓

    Besides chickens, the disease also concerns turkeys, ducks, geese, raptors, and canaries.

    So 2/4 diseases are already irrelevant for birds but they sound scary because they infect humans. But:

    Avian cholera barely even counts because it’s caused by “Pasteurella multocida” while (human) cholera is caused by “Vibrio cholerae”. The two bacteria are genetically as closely related as humans and mammoths. And avian cholera does not kill anything but birds.

    This isn’t to degrade the vulture’s ability to withstand pathogens and toxins, that is still very impressive. It’s just that obviously birds are immune to most human diseases, as pathogens don’t tend to easily jump between distant species.

    And even if they DO jump between species, they usually do not bring their “deadliness” with them (unless they produce poison like botox) as different species react completely differently. Maybe rabies is the one exception, as adjusting the behavior of your host by rummaging around in the brain has some universally negative side effects.










  • If you (or anyone else) wants to check their understanding of voltage as the difference between two electric potentials, here’s a couple exercises I stole from a text book:

    (Note: Electric potential is also measured in Volt.)

    A battery has a constant voltage of 1.5V between its plus and its minus pole. What is the electric potential of the minus pole compared to ground potential when:

    1. The battery is on an electrically isolating mat?
    Solution

    The battery is not connected to ground. Therefore, no statements about the electric potential of either pole can be made.

    1. The minus pole is connected to ground?
    Solution

    Because of the connection, the electric potential of the minus pole equals that of the ground, which is by definition 0V.

    1. The plus pole is connected to ground?
    Solution

    Now the potential of the plus pole equals that of the ground. We know that the voltage difference between the plus and minus pole is 1.5V. Since this difference is measured by subtracting the potential of the minus pole from the potential of the plus pole the equation: 1.5V = p_plus - p_minus = 0V - p_minus => p_minus = -1.5V.

    Therefore the potential of the minus pole is -1.5V.

    1. The plus pole is connected to a generator producing an electric potential of 10,000V compared to ground?
    Solution

    Now the electric potential of the plus pole is also 10,000V. The potential of the minus pole must be 1.5V lower, so it must equal 9998.5V.






  • Vinegar?

    Proper pipe cleaning is done using a sodium hydroxide solution. Plus, it causes permanent blindness if it comes in contact with eyes:

    Other common uses of sodium hydroxide include: […]

    • as drain cleaners that convert pipe-clogging fats and grease into soap, which dissolves in water

    Like other corrosive acids and alkalis, a few drops of sodium hydroxide solutions can readily decompose proteins and lipids in living tissues via amide hydrolysis and ester hydrolysis, which consequently cause chemical burns and may induce permanent blindness upon contact with eyes.

    https://en.wikipedia.org/wiki/Sodium_hydroxide

    It’s genuinely dangerous, don’t handle this stuff if you don’t wear proper eye and skin protection.