storm watch

[Macky]

How is rainfall measured?
They're saying that 75mm of rain has fallen in 24hours, how are they measuring 75mm? is there a standard sized pot that they measure off?

 

[Dour]

How is rainfall measured?
They're saying that 75mm of rain has fallen in 24hours, how are they measuring 75mm? is there a standard sized pot that they measure off?

In this case, size doesn't matter. Big pot or little pot - both will fill to a depth of 75mm.

Although, in practice, a funnel is used to feed rain into a marked tube so it can be measured more accurately.

 

[Macky]

In this case, size doesn't matter. Big pot or little pot - both will fill to a depth of 75mm.

Although, in practice, a funnel is used to feed rain into a marked tube so it can be measured more accurately.

Does it? My feeble brain thinks that a wider pot wouldn't fill as much as a narrower pot, if that makes any sense.

 

[Jeff]

Does it? My feeble brain thinks that a wider pot wouldn't fill as much as a narrower pot, if that makes any sense.

How do you prefer your pot then?

 

[bocadillo]

http://news.bbc.co.uk/1/hi/uk/6236348.stm

What a waste of a life:icon_conf.

So the other two weren't wasted?

 

[Jeff]

So the other two weren't wasted?

When it was originally posted there was only one.

 

[Hazzman]

So the other two weren't wasted?

At the time of posting, the article only contained the details of one death.

 

[Macky]

How do you prefer your pot then?

regular

 

[bocadillo]

When it was originally posted there was only one.

At the time of posting, the article only contained the details of one death.

Ah good. I was beginning to think that BB had something against young boys and old men.

 

[MKFox]

Ah good. I was beginning to think that BB had something against young boys and old men.

Au contraire......:icon_wink

 

[Durham Fox]

Ah good. I was beginning to think that BB had something against young boys and old men.

Apparently he is often found with 'something' against both.

 

[Siouxsie]

The area, not the footie ground.

not according to this photo


http://newsimg.bbc.co.uk/media/images/42425000/jpg/_42425188_hillsborough_pa_416.jpg

Perhaps we could organise a swimming gala there insteado f playing them at football.

 

[Hazzman]

not according to this photo


http://newsimg.bbc.co.uk/media/images/42425000/jpg/_42425188_hillsborough_pa_416.jpg

Perhaps we could organise a swimming gala there insteado f playing them at football.

Aye, just seen it.

 

[Lako42]

i hope billy sharp can play water polo

 

[Dour]

Does it? My feeble brain thinks that a wider pot wouldn't fill as much as a narrower pot, if that makes any sense.

I know what you're getting at, but imagine rain falls and covers a football in 75mm of water. If you had put a pot a meter wide on it, the water would be also be 75mm deep there. If you were to put one a cm wide on it, the water would still be 75mm deep there, too.

 

[Jeff]

I know what you're getting at, but imagine rain falls and covers a football in 75mm of water. If you had put a pot a meter wide on it, the water would be also be 75mm deep there. If you were to put one a cm wide on it, the water would still be 75mm deep there, too.

But the bigger the pot, the more accurate the measurement will be.

 

[Dour]

But the bigger the pot, the more accurate the measurement will be.

As I said before, in practice, a funnel is used with a commensurate scale which gives readings down to 0.1 mm, I think.

 

[Macky]

As I said before, in practice, a funnel is used with a commensurate scale which gives readings down to 0.1 mm, I think.

so in that case, would the container need to be the same diameter as the widest point of the funnel?

 

[Dour]

so in that case, would the container need to be the same diameter as the widest point of the funnel?

Are you ****s just trying to lift my leg here?

In case you're not, if the area of the top of the funnel that catches the rain is ten times that of the container, then you can use a scale where 1 cm collected in the container represents 1 mm of rainfall.

 

[Jeff]

if the area of the top of the funnel that catches the rain is ten times that of the container, then you can use a scale where 1 cm collected in the container represents 1 mm of rainfall.

What if you wanted to measure it in inches?

Would you have to use an imperial funnel?