Comment on Just finished wiring the garage to the house - and find that the wire is damaged! Now what?

• fubbernuckin@lemmy.world ⁨1⁩ ⁨year⁩ ago

  M = meters. Mi = miles

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  • Lem453@lemmy.ca ⁨1⁩ ⁨year⁩ ago

    m = meters. M = mega (x 1 000 000).

    That’s why Km is 1 thousand meters and Mm is 1 million meters.

    The actual unit is lower case, the multiplier is uppercase.

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    • Kethal@lemmy.world ⁨1⁩ ⁨year⁩ ago

      It’s also a lowercase k in km.

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    • neumast@lemmy.world ⁨1⁩ ⁨year⁩ ago

      The actual unit is lower case, the multiplier is uppercase.

      Wouldn’t agree with that… There are many different units and multipliers. the letter being uppercase or lowercase has nothing to do with it.

      Examples:

      letters for prefixes/multipliers being uppercase and lowercase: P, T, G, M, k, h, da, d, c, m, u, n (trillion, billion, million, thousand, hundred, ten, one tenth, one hundredth, one thousandth, one millionth, one billionth)

      Letters for units being uppercase and lowercase: s, m, g, N, W, J, A, K, V, h, Hz (seconds, meter, gram, Newton, Watt, Joule, Ampere, Kelvin, Volt, hour, Hertz) (just recognised, that most units, which are named after scientists, are written with capital letters…)

      km = thousand meters/kilometer K = Kelvin (unit for temperature) M = Mega (prefix for one million) kJ = thousand joules s = second ms = millisecond (one thousandth) S = siemens (electrical conductivity) mS = milli siemens mm = millimeter (one thousandth of a meter) Mm = megameter (one million meters or thousand kilometers)

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    • elbarto777@lemmy.world ⁨1⁩ ⁨year⁩ ago

      For reals? Where can I read more about this?

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