Imperial vs Metric

[stuckinthemud]

Well in the old days, we lived in a cardboard box in't gutter...an 1/8 of a pear drop were luxury just for birthday

 

[billw]

Now, ccalculate .125 of £3.6

45p. This isn't mentally draining stuff for an accountant btw

 

[J-G]

Ok, so pear drops are £3.60 a pound, how much is 1/8?

9 bob!

 

[stuckinthemud]

Fair 'nuff, point still stands, system of 12 works in a society where most people had a limited education, if they had any education at all

 

[billw]

Fair 'nuff, point still stands, system of 12 works in a society where most people had a limited education, if they had any education at all

TBF I worked the second one out simply by halving it three times.

 

[stuckinthemud]

Wish I was that clever

 

[JoshD]

Since the figure quoted is close to 30% of a nanosecond for nearly 3-1/3 feet it's much closer to 10 feet per nanosecond.

1/300,000,000 seconds is 3 1/3 nanosecond not 0.3 nanoseconds. Google gives speed of light as 0.9857 feet/nanosecond

 

[Phil Pascoe]

Imperial is best. Five eights of f. a. sounds much better than 0.625 of f. a.

 

[J-G]

1/300,000,000 seconds is 3 1/3 nanosecond not 0.3 nanoseconds.

I looked long and hard at that in the first instance (didn't Google) and 1 nanosecond is 1/1,000,000,000 sec. which makes 1/300,000,000 / 1/1,000,000,000 = 0.3ns. and there isn't an SI unit of 1/90,000,000 that would be needed to make 1/300,000,000 sec. 3 1/3 ns.

But I'm now totally confused because as you have correctly pointed out Josh, Google does say light travels 1' in 1 nanosecond ????

So, I have something wrong but can't see what!

[EDIT] D'oh !!! I'm upside down !!

 

[JoshD]

I looked long and hard at that in the first instance (didn't Google) and 1 nanosecond is 1/1,000,000,000 sec. which makes 1/300,000,000 / 1/1,000,000,000 = 0.3ns. and there isn't an SI unit of 1/90,000,000 that would be needed to make 1/300,000,000 sec. 3 1/3 ns.

But I'm now totally confused because as you have correctly pointed out Josh, Google does say light travels 1' in 1 nanosecond ????

So, I have something wrong but can't see what!

[EDIT] D'oh !!! I'm upside down !!

Yep, you were upside down, so easy to do!