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measure

Measure is a fundamental concept of mathematics. Measures provide a mathematical abstraction for common notions like mass, distance/length, area, volume, probability of events, and — after some adjustments — electrical charge. These seemingly distinct concepts are innately very similar and may, in many cases, be treated as mathematically indistinguishable. Measures are foundational in probability theory. Far-reaching generalizations of measure are widely used in quantum physics and physics in general.
The intuition behind this concept dates back to Ancient Greece, when Archimedes tried to calculate the area of a circle. But it was not until the late 19th and early 20th centuries that measure theory became a branch of mathematics. The foundations of modern measure theory were laid in the works of Émile Borel, Henri Lebesgue, Johann Radon, Constantin Carathéodory, and Maurice Fréchet, among others.

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  1. U

    Why does a 3/8" bush cistern lever actually measure 6/8" in diameter?

    Or does the 3/8" refer to the radius of the bush, not the diameter?
  2. H

    How to best measure flow and return from boiler?

    Hi there, I have the following system boiler setup with a low loss header and four different circuits. I've set the boiler flow to different levels between 65 to 70 degrees but the surface temperature readings never seem to reach much above 55 degrees into the LLH - I have tried a clip on...
  3. C

    how to measure x dimensions on lcs

    how do l measure x dimensions on lcs
  4. P

    Correct way to measure fitting allowance and angled fitting offset

    Hello, running pipe isn’t a standard part of my day to day as a power generation engineer but occasionally install inch fuel pipe for fuel delivery systems. I am now about to take on a more in dept installation and was after some advice regarding the maths and industry methods of measuring the...
  5. B

    Measure for replacement shower doors

    I need to replace some shower doors as they are falling apart and the manufacturer is no longer trading. I have fitted loads of adaptation style ones, which is usually a measure of tile to tile or tile to end finish, eg another door. However I’ve been looking at the new Mira range, but can’t get...
  6. Last Plumber

    Lazer Measures. Which one do you recommend?

    If you have one of these, which one did you buy and was it worth it?
  7. J

    Best way to measure flow & return temperature's at radiators?

    What's the best way to measure flow & return temperature at radiator? What type of thermometer?
  8. O

    Low water pressure

    Hi lads, I hope you all are ok. i was wondering if anyone could help me out and give me some solutions on how to solve the low water pressure. System: sealed system, Boiler: condensing boiler, British gas 532/i 373 FD 690 GC no. 47.406.02 Serial No. 05703 Problem: once you open the...
    • Old Account
    • Thread
    • boiler could low water pressure measure pressure solve water water pressure
    • Replies: 15
    • Forum: Plumbing Jobs | The Job-board
  9. P

    Malteser and tape measure game

    Has anyone played this game? Put the end of a tape measure in someone's mouth and see if you can roll a Malteser down it. Don't use the one in the tool box god knows what manky ness is on there.
  10. P

    Malteser and tape measure game

    Has anyone played this game? Put the end of a tape measure in someone's mouth and see if you can roll a Malteser down it. Don't use the one in the tool box god knows what manky ness is on there.
  11. B

    Toilet siphon

    Alright guys? i don't really do any plumbing work but a friend has asked me to look at his toilet as you have to pump the handle a few times to get a decent flush. So in guessing the siphon membrane has failed. my question is though, how do you size the siphon? Just measure the height of the...
  12. U

    Gauge to measure hot water in our insulated cyclinder??

    Hi there. Quick bit of advice. Is it possible to retrofit something that will measure the amount of hot water in your hot water cylinder?? We had it fitted about two years ago and is covered entirely in a turquoise green insulating foam. It's impossible to tell how much hot water there is...
    • Unregistered
    • Thread
    • boiler cylinder gauge heater hot hot water insulated measure shower water
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  13. P

    How do you measure for a Crestalux cap?

    Hi all, just getting to know the place. Can anyone advise me on how to measure the part on a radiator where the lock shield fits please (I think that's what it's called as its the opposite end to the thermostat)? We've had some decorating done and afterwards noticed the old Crestalux cap was...
  14. H

    hole saw for acrylic bath

    hi i have to drill tap holes in my new bath 32mm hole do i need a special hole saw or can i use a hss one i already own thanks
  15. B

    Tape measure needed!

    Alright guys, still a few more posts (I don't wanna post willie- nilly) until croppie let's me talk dirty;-) but look at this! I'm not sure who is worse.... The bloke who fitted the new boiler downstairs and can't read a tape measure or the 3 blokes who quoted to replace the old boiler, in the...
  16. A

    Things still going well.

    Work is going ok been at this company now for 5 or 6 months and work is varied! Could be putting a boiler in one week, then on maintenance the next. Anything from replacing syphons, filling valves, washing machine valves, showers, repairing leaks. Then there's the other stuff doing appliance...
  17. J

    best way to measure mains flow rates/pressure?

    Hi all, I'd be interested to hear how you all measure mains flow rates/pressure in a house. I'm soon to install a 10kw electric shower in a friend's house. I'm a student plumber. My tutor has advised me to check the house's flow rates and pressure are enough for the shower. I've got a flow...
  18. P

    WHAT IS 10mm wire ?????????

    When people talk about 10mm wire for electrical shower ( 10.5kw), Is it the measurement of the diameter of a single cable ( the live for example) or is it the diameter of the whole 3 wires coated?? Sorry, amateur.. ;] Thx!
  19. H

    zmeasuring taps

    Hi - we want to replace the taos in our bathroom. - what do i need to measure to get a size of tap to buy?? do i measure the o utside thread of the old tap? - confused.com
  20. P

    How to Measure O Rings

    I recently removed the DHW plate hex on my Vaillant Turbomax to descale it. The o rings were fine, so I just petrol. jellied them and reused. It did occur to me that if I wanted to replace them, I have large selection boxes of metric and imperial o rings. In the absence of the manufacturer's...
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