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Bullshit units of measure

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james_s:

--- Quote from: aduinstat on October 14, 2022, 12:20:30 am ---Miles are bullshit. The USA uses 3 different miles that are close to the same length, but slightly different.

--- End quote ---

We do? The only mile I'm familiar with is 5,280 feet.

Sal Ammoniac:
NASA uses nautical miles (at least in their launch commentaries) 1 nautical mile = 6076 feet.

"Knots" are nautical miles per hour.

aduinstat:

--- Quote from: james_s on October 14, 2022, 12:30:25 am ---
--- Quote from: aduinstat on October 14, 2022, 12:20:30 am ---Miles are bullshit. The USA uses 3 different miles that are close to the same length, but slightly different.

--- End quote ---

We do? The only mile I'm familiar with is 5,280 feet.

--- End quote ---

We also nautical miles which are about 6,076 feet (after 1954), and survey miles which are about 1/8 inch longer than an international mile.

IanB:
Even if air watts is a recognized measurement, neither it nor anything else is really useful unless everyone quotes it in the same way so you can make comparisons. If Dyson gives a value for air watts and no other manufacturer does the same, then it is completely useless.

Personally, I would be happy with something simple like air flow at the suction nozzle (cubic feet per minute in the USA or liters per second everywhere else). You are going to find that the vacuum with more air flow sucks better, because to get more air flow you need more suction.

TimFox:

--- Quote from: aduinstat on October 14, 2022, 01:13:56 am ---
--- Quote from: james_s on October 14, 2022, 12:30:25 am ---
--- Quote from: aduinstat on October 14, 2022, 12:20:30 am ---Miles are bullshit. The USA uses 3 different miles that are close to the same length, but slightly different.

--- End quote ---

We do? The only mile I'm familiar with is 5,280 feet.

--- End quote ---

We also nautical miles which are about 6,076 feet (after 1954), and survey miles which are about 1/8 inch longer than an international mile.

--- End quote ---

The US survey foot and survey mile (based on 1 meter = 39.37 inches exactly, the US definition before 1959) are being abandoned.
The US statute mile is 5,280 feet (based on 1 inch = 2.54 cm exactly, the current US definition of the customary unit, not "imperial" unit).
Nautical miles are an international standard, based on geodesy.
The term "mile" comes from the latin for one thousand paces.

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