I.Lewis on thu 11 nov 99
------------------
Dear Clayart Subscribers
My intention in asking that subscribers who post and give temperature values
should always qualify the value with the units was to save my geriatric =
brain
from confusion. Confusion not to be confused with elderly confusion. I did =
not
intend to start a string about the origins and national idiosyncrasies of
temperature measurement. But it appears there is some confusion in the minds=
of
some as to the origin of these units.
Now the units or temperature called Fahrenheit and Centigrade came into use =
some
time while the Eastern States of North America were still British colonies =
and I
provide the following information.
Anders Celsius, 1701-44. Invented a temperature scale base on the freezing =
point
of water, which he set at zero and the boiling point of water. Divided this =
into
range into one hundred parts and called the scale Centigrade. We call his =
scale
Celsius to honour him, not because someone on the Brussels gravy train
bureaucrat said it should be so.
Gabriel Daniel Fahrenheit, 1686-1736. Invented both the alcohol in =
glass,1709
and mercury in glass,1714, thermometers. For these to be useful he had to =
invent
a scale which would measure the lowest temperatures he could achieve and
sensible temperatures as well as the boiling point of water. He made his =
lowest
temperature zero ' 0 ' for the shortest distance of the thread of alcohol =
when
the bulb of the thermometer was in an equal mixture of ice and common salt,
called the freezing point of water 32, the temperature of the human body as =
96.
Boiling water came out to be two hundred and twelve. Please do not ask me =
why he
chose to have one hundred and eighty units difference between freezing and
boiling points. Perhaps his thermometer was in the form of a semicircle.
Refinements changed the boiling point of blood to 96.8.
Lord Kelvin, 1824-1907, was a British scientist who did a lot of research =
into
thermodynamics. The Kelvin is a unit named after him and it is defined as
1/273.16 of the thermodynamic temperature of the Triple Point of Water.
The incremental value of Kelvin and Celsius units are equivalent. Centigrade
seems to mean measuring in hundreds.
Ivor, in South Oz where things are often measured in Degees Proof after =
Sundown.
Pottery by Dai on thu 11 nov 99
Hi, Ivor - I think the blood temperature is 98.6F, not 96.8F, but could be
wrong as Canada has been C not F for a while now and my memory is also
"geriatric". At any rate, I laughed when I read "boiling point of
blood"---my blood reaches the boiling point due not to temperature, but to
circumstances! :) But (other than the boiling blood temp.) your research
was really informative---thank you!
Dai in Kelowna, B.C.
-----Original Message-----
From: I.Lewis
To: CLAYART@LSV.UKY.EDU
Date: Thursday, November 11, 1999 7:41 AM
Subject: Temperature Scales. A little history
----------------------------Original message----------------------------
------------------
Dear Clayart Subscribers
My intention in asking that subscribers who post and give temperature values
should always qualify the value with the units was to save my geriatric
brain
from confusion. Confusion not to be confused with elderly confusion. I did
not
intend to start a string about the origins and national idiosyncrasies of
temperature measurement. But it appears there is some confusion in the minds
of
some as to the origin of these units.
Now the units or temperature called Fahrenheit and Centigrade came into use
some
time while the Eastern States of North America were still British colonies
and I
provide the following information.
Anders Celsius, 1701-44. Invented a temperature scale base on the freezing
point
of water, which he set at zero and the boiling point of water. Divided this
into
range into one hundred parts and called the scale Centigrade. We call his
scale
Celsius to honour him, not because someone on the Brussels gravy train
bureaucrat said it should be so.
Gabriel Daniel Fahrenheit, 1686-1736. Invented both the alcohol in
glass,1709
and mercury in glass,1714, thermometers. For these to be useful he had to
invent
a scale which would measure the lowest temperatures he could achieve and
sensible temperatures as well as the boiling point of water. He made his
lowest
temperature zero ' 0 ' for the shortest distance of the thread of alcohol
when
the bulb of the thermometer was in an equal mixture of ice and common salt,
called the freezing point of water 32, the temperature of the human body as
96.
Boiling water came out to be two hundred and twelve. Please do not ask me
why he
chose to have one hundred and eighty units difference between freezing and
boiling points. Perhaps his thermometer was in the form of a semicircle.
Refinements changed the boiling point of blood to 96.8.
Lord Kelvin, 1824-1907, was a British scientist who did a lot of research
into
thermodynamics. The Kelvin is a unit named after him and it is defined as
1/273.16 of the thermodynamic temperature of the Triple Point of Water.
The incremental value of Kelvin and Celsius units are equivalent. Centigrade
seems to mean measuring in hundreds.
Ivor, in South Oz where things are often measured in Degees Proof after
Sundown.
Richard Jeffery on fri 12 nov 99
No, I can't do this.... this has gone on far too long.... oh, alright
then...
THE BOILING POINT OF BLOOD?
what sort of image is that for gentle craft folk.....
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.UKY.EDU]On Behalf
Of I.Lewis
Sent: 11 November 1999 15:40
To: CLAYART@LSV.UKY.EDU
Subject: Temperature Scales. A little history
----------------------------Original message----------------------------
------------------
Dear Clayart Subscribers
My intention in asking that subscribers who post and give temperature values
should always qualify the value with the units was to save my geriatric
brain
from confusion. Confusion not to be confused with elderly confusion. I did
not
intend to start a string about the origins and national idiosyncrasies of
temperature measurement. But it appears there is some confusion in the minds
of
some as to the origin of these units.
Now the units or temperature called Fahrenheit and Centigrade came into use
some
time while the Eastern States of North America were still British colonies
and I
provide the following information.
Anders Celsius, 1701-44. Invented a temperature scale base on the freezing
point
of water, which he set at zero and the boiling point of water. Divided this
into
range into one hundred parts and called the scale Centigrade. We call his
scale
Celsius to honour him, not because someone on the Brussels gravy train
bureaucrat said it should be so.
Gabriel Daniel Fahrenheit, 1686-1736. Invented both the alcohol in
glass,1709
and mercury in glass,1714, thermometers. For these to be useful he had to
invent
a scale which would measure the lowest temperatures he could achieve and
sensible temperatures as well as the boiling point of water. He made his
lowest
temperature zero ' 0 ' for the shortest distance of the thread of alcohol
when
the bulb of the thermometer was in an equal mixture of ice and common salt,
called the freezing point of water 32, the temperature of the human body as
96.
Boiling water came out to be two hundred and twelve. Please do not ask me
why he
chose to have one hundred and eighty units difference between freezing and
boiling points. Perhaps his thermometer was in the form of a semicircle.
Refinements changed the boiling point of blood to 96.8.
Lord Kelvin, 1824-1907, was a British scientist who did a lot of research
into
thermodynamics. The Kelvin is a unit named after him and it is defined as
1/273.16 of the thermodynamic temperature of the Triple Point of Water.
The incremental value of Kelvin and Celsius units are equivalent. Centigrade
seems to mean measuring in hundreds.
Ivor, in South Oz where things are often measured in Degees Proof after
Sundown.
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