So, I learned in physics class at school in the UK that the value of acceleration due to gravity is a constant called g and that it was 9.81m/s^2. I knew that this value is not a true constant as it is affected by terrain and location. However I didn’t know that it can be so significantly different as to be 9.776 m/s^2 in...
Just don’t make the same mistake as one physics lab did. They made a series of measurements and their results showed that gravity quickly increases in fall, falls slowly over winter, and back to about pre-fall levels very slowly in summer. It took quite a while to figure out the reason of this unexpected result. They turned their equipment inside out to find a mistake to no avail. Then they realized that the university stored coal for the central heating and hot water in the basement under the lab…
Rounding of constants always depends on what you are calculating. Getting a rocket into orbit is a case to use the actual local value of g with a bunch of digits (and the change with height, too). If you build a precision tool, some more digits of PI are no bad idea.
But to calculate the lenght of fence to buy to surround a round pond, I actually used 10/3 for “PI plus safety margin” once.
Can’t be that big, as the difference in mass close to the instrument only varied in the several tons category, but obviously enough to puzzle the scientists.
Now that insurances against natural disasters start costing a fortune in places like Florida, and you probably have to have such an insurance to get a mortgage there, it, the costs for housing down there will probably skyrocket soon.
Do we know how long it took for cuneiform to develop from counting cows and barley, to drafting official documents and contracts, to creating literature?
Does everyone learn the same gravity in school or is it different everywhere?
So, I learned in physics class at school in the UK that the value of acceleration due to gravity is a constant called g and that it was 9.81m/s^2. I knew that this value is not a true constant as it is affected by terrain and location. However I didn’t know that it can be so significantly different as to be 9.776 m/s^2 in...
Salary Needed To Buy a Home In The US ( reddthat.com )
Trump's former lawyer was indicted in Georgia. She wants his defense funds to pay her legal fees. ( www.usatoday.com )
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(August) What are you working on now, DIY? ( beehaw.org )
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