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Cake day: June 13th, 2023

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  • reattach@lemmy.worldtoScience Memes@mander.xyzGolden
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    2 months ago

    In January 1783, Price returned to his laboratory in Guildford, ostensibly to start production of the miraculous powders. In fact, he set about the distillation of laurel water (which contained hydrogen cyanide, commonly known as prussic acid). He wrote his will at the same time, but it was another six months before he returned to London to invite members of the Royal Society to witness the experiment on 3 August in his laboratory in Guildford.

    Despite the claimed successes of his initial demonstrations and the furor they had caused, only three members turned up in Guildford on the appointed day. Although clearly disappointed by the poor turnout, Price welcomed the three men and then, stepping to one side, ended his life by drinking the flask of laurel water he had prepared. The three men immediately noticed a change in his appearance, but before they could do anything, Price had died of cyanide poisoning.







  • If you’re measuring the temperature in the room currently, you could try trending it yourself. Start the heater, and see how quickly the temperature rises (e.g., degrees per hour). Call this Rate 1.

    Then turn off the heat and see how quickly the temperature drops. Call this Rate 2. For the formula below, make it a positive number.

    Assuming the weather conditions are similar and the room temperature doesn’t change too much during data collection:

    Rate of heat loss = Heater power * Rate 2 / (Rate 1 + Rate 2)

    This number could be impacted by the weather: temperature, wind and insolation (affected by time of day, time of year, latitude, and cloud cover). It’s also impacted by room conditions (temperature, slade position, how many times the door is opened), so you’d need to do a few trials to get a sense for thr impact of different variables.

    You’ve probably already thought of this, but your strategy is going to result in noticeable swings in temperature in the room, because ypure going to do a lot of heating at once when prices are cheap, then turn off the heating and let the room cool. Compare that to a thermostat that tries to maintain a constant temperature.

    Sounds like a fun project - good luck! I’d love to hear updates here as you go.








  • Something you may find is that your coffee will lose flavor over time - for example, we get 2lb/month from a local roaster (usually ~2 days off roast) and there is a noticeable (to me) decrease in flavor by the end of the month.

    If that’s your experience as well, you can try buying smaller quantities, using a vacuum jar to store coffee, or freezing the bulk of the coffee and only taking out what you need for a shorter period (read up on best ways to freeze coffee first).