"Joe Hunt" wrote in message
...


Summer is the time when you see CBs at a greater distance due to their
larger height. Some CBs can touch 40,000ft in the height of summer in air
masses with high tropopauses. Conversely, in winter, CB tops in a northerly
can be as low as 8000ft. Think of Pythagoras' Theorem.


From this distance to the horizon calculator:

http://www.boatsafe.com/tools/horizon.htm

The very top of the 40,000ft cloud would be visible at a distance
of 269 miles.

Col
--
Bolton, Lancashire.
160m asl.
http://www.reddwarfer.btinternet.co.uk
http://www.reddwarfer.btinternet.co....rPictures.html

"Joe Hunt" wrote in message
...


Summer is the time when you see CBs at a greater distance due to their
larger height. Some CBs can touch 40,000ft in the height of summer in air
masses with high tropopauses. Conversely, in winter, CB tops in a northerly
can be as low as 8000ft. Think of Pythagoras' Theorem.


From this distance to the horizon calculator:

http://www.boatsafe.com/tools/horizon.htm

The very top of the 40,000ft cloud would be visible at a distance
of 269 miles.

Col
--
Bolton, Lancashire.
160m asl.
http://www.reddwarfer.btinternet.co.uk
http://www.reddwarfer.btinternet.co....rPictures.html

"Joe Hunt" wrote in message
...


Summer is the time when you see CBs at a greater distance due to their
larger height. Some CBs can touch 40,000ft in the height of summer in air
masses with high tropopauses. Conversely, in winter, CB tops in a northerly
can be as low as 8000ft. Think of Pythagoras' Theorem.


From this distance to the horizon calculator:

http://www.boatsafe.com/tools/horizon.htm

The very top of the 40,000ft cloud would be visible at a distance
of 269 miles.

Col
--
Bolton, Lancashire.
160m asl.
http://www.reddwarfer.btinternet.co.uk
http://www.reddwarfer.btinternet.co....rPictures.html

"Col" wrote

From this distance to the horizon calculator:

http://www.boatsafe.com/tools/horizon.htm

I love that website. It gives the answer to 15 decimal places. (that's to
an accuracy of micro metres). Wow!

Is that measuring to the front of the eye or to the back? (or to the front
of the cornea or to the back?)

Why do people persist in trying to impress Joe Publish with perceived levels
of accuracy that just aren't possible?
Incidentally, tomorrow's maximum temperature is forecast to be 17.3975720273
degrees Celsius
(not 17.3975720274 as has been widely suggested)

Jack

"Col" wrote

From this distance to the horizon calculator:

http://www.boatsafe.com/tools/horizon.htm

I love that website. It gives the answer to 15 decimal places. (that's to
an accuracy of micro metres). Wow!

Is that measuring to the front of the eye or to the back? (or to the front
of the cornea or to the back?)

Why do people persist in trying to impress Joe Publish with perceived levels
of accuracy that just aren't possible?
Incidentally, tomorrow's maximum temperature is forecast to be 17.3975720273
degrees Celsius
(not 17.3975720274 as has been widely suggested)

Jack

"Col" wrote

From this distance to the horizon calculator:

http://www.boatsafe.com/tools/horizon.htm

I love that website. It gives the answer to 15 decimal places. (that's to
an accuracy of micro metres). Wow!

Is that measuring to the front of the eye or to the back? (or to the front
of the cornea or to the back?)

Why do people persist in trying to impress Joe Publish with perceived levels
of accuracy that just aren't possible?
Incidentally, tomorrow's maximum temperature is forecast to be 17.3975720273
degrees Celsius
(not 17.3975720274 as has been widely suggested)

Jack

In article ,
Jack Harrison writes:
Why do people persist in trying to impress Joe Publish with perceived levels
of accuracy that just aren't possible?

This is a pet hate of mine too.
--
John Hall "[It was] so steep that at intervals the street broke into steps,
like a person breaking into giggles or hiccups, and then resumed
its sober climb, until it had another fit of steps."
Ursula K Le Guin "The Beginning Place"

In article ,
Jack Harrison writes:
Why do people persist in trying to impress Joe Publish with perceived levels
of accuracy that just aren't possible?

This is a pet hate of mine too.
--
John Hall "[It was] so steep that at intervals the street broke into steps,
like a person breaking into giggles or hiccups, and then resumed
its sober climb, until it had another fit of steps."
Ursula K Le Guin "The Beginning Place"

In article ,
Jack Harrison writes:
Why do people persist in trying to impress Joe Publish with perceived levels
of accuracy that just aren't possible?

This is a pet hate of mine too.
--
John Hall "[It was] so steep that at intervals the street broke into steps,
like a person breaking into giggles or hiccups, and then resumed
its sober climb, until it had another fit of steps."
Ursula K Le Guin "The Beginning Place"

"Jack Harrison" wrote in message
...

"Col" wrote

From this distance to the horizon calculator:

http://www.boatsafe.com/tools/horizon.htm

I love that website. It gives the answer to 15 decimal places. (that's to
an accuracy of micro metres). Wow!

Is that measuring to the front of the eye or to the back? (or to the front
of the cornea or to the back?)

Why do people persist in trying to impress Joe Publish with perceived levels
of accuracy that just aren't possible?

I don't think they are trying to 'impress' people.
Far more likely is that whatever software they use to calculate the
distances by default churns out such figures and they haven't seen
fit to correct it into something more reasonable.

Col
--
Bolton, Lancashire.
160m asl.
http://www.reddwarfer.btinternet.co.uk
http://www.reddwarfer.btinternet.co....rPictures.html