6 ms·

> It only takes a little electricity to power this process, which can raise the refrigerant’s temperature by many degrees Celsius. And the same electricity can

> It only takes a little electricity to power this process, which can raise the refrigerant’s temperature by many degrees Celsius. And the same electricity can raise the temperature by even more degrees Fahrenheit!

Kenji 2y ago
[dead]
freitzkriesler2 2y ago
Using a temperature system built around water to measure air temperature. I mean I can use it but the range of fahrenheit is more useful. What we really need is a combination of the two. Something that measures air temperature and water content because 68F at 5% humidity is a lot different than the same temp at 40%>
- rob74 2y ago
  > Several accounts of how he originally defined his scale exist, but the original paper suggests the lower defining point, 0 °F, was established as the freezing temperature of a solution of brine made from a mixture of water, ice, and ammonium chloride (a salt). The other limit established was his best estimate of the average human body temperature, originally set at 90 °F, then 96 °F (about 2.6 °F less than the modern value due to a later redefinition of the scale). Nothing beats scientific accuracy and thoroughness, right? So it then actually ended up being tied to water as well: > For much of the 20th century, the Fahrenheit scale was defined by two fixed points with a 180 °F separation: the temperature at which pure water freezes was defined as 32 °F and the boiling point of water was defined to be 212 °F (from https://en.wikipedia.org/wiki/Fahrenheit https://en.wikipedia.org/wiki/Fahrenheit)
  - Leftium 2y ago
    So that's why one unit Celcius is roughly 2 units Fahrenheit! For some reason I never noticed there are exactly 180 degrees between freezing and boiling points on the Fahrenheit scale. 100°C is a nice "round" number, and 180°F divides evenly into a lot of smaller numbers.
- wcerfgba 2y ago
  Wet bulb temperatures account for evaporation, but I don't know if weather stations report wet bulb or dry bulb.
- Leftium 2y ago
  > What we really need is a combination of the two. Something that measures air temperature and water content because 68F at 5% humidity is a lot different than the same temp at 40% The "feels like" apparent temperature accounts for things like humidity and windchill[1]. Many weather apps provide the "feels like" temp, including my app: https://uw.leftium.com https://uw.leftium.com I was going to drop the "feels like" reading in my new weather app (I just didn't notice a major difference), but maybe I'll keep it... [1]: https://www.wikiwand.com/en/Apparent_temperature https://www.wikiwand.com/en/Apparent_temperature
wlll 2y ago
Heat in F chill in C, et voilà! free energy.
- voisin 2y ago
  Unit arbitrage. I love it.
- destructionator 2y ago
  I'd buy that for a dollar!

Kenji 2y ago

[dead]

freitzkriesler2 2y ago

Using a temperature system built around water to measure air temperature. I mean I can use it but the range of fahrenheit is more useful. What we really need is a combination of the two. Something that measures air temperature and water content because 68F at 5% humidity is a lot different than the same temp at 40%>

rob74 2y ago
> Several accounts of how he originally defined his scale exist, but the original paper suggests the lower defining point, 0 °F, was established as the freezing temperature of a solution of brine made from a mixture of water, ice, and ammonium chloride (a salt). The other limit established was his best estimate of the average human body temperature, originally set at 90 °F, then 96 °F (about 2.6 °F less than the modern value due to a later redefinition of the scale). Nothing beats scientific accuracy and thoroughness, right? So it then actually ended up being tied to water as well: > For much of the 20th century, the Fahrenheit scale was defined by two fixed points with a 180 °F separation: the temperature at which pure water freezes was defined as 32 °F and the boiling point of water was defined to be 212 °F (from https://en.wikipedia.org/wiki/Fahrenheit https://en.wikipedia.org/wiki/Fahrenheit)
- Leftium 2y ago
  So that's why one unit Celcius is roughly 2 units Fahrenheit! For some reason I never noticed there are exactly 180 degrees between freezing and boiling points on the Fahrenheit scale. 100°C is a nice "round" number, and 180°F divides evenly into a lot of smaller numbers.
wcerfgba 2y ago
Wet bulb temperatures account for evaporation, but I don't know if weather stations report wet bulb or dry bulb.
Leftium 2y ago
> What we really need is a combination of the two. Something that measures air temperature and water content because 68F at 5% humidity is a lot different than the same temp at 40% The "feels like" apparent temperature accounts for things like humidity and windchill[1]. Many weather apps provide the "feels like" temp, including my app: https://uw.leftium.com https://uw.leftium.com I was going to drop the "feels like" reading in my new weather app (I just didn't notice a major difference), but maybe I'll keep it... [1]: https://www.wikiwand.com/en/Apparent_temperature https://www.wikiwand.com/en/Apparent_temperature

wlll 2y ago

Heat in F chill in C, et voilà! free energy.

voisin 2y ago
Unit arbitrage. I love it.
destructionator 2y ago
I'd buy that for a dollar!