Thermography QOD 10-06-2008

[Kevin A. Richardson]

Let's start off with something relatively easy.

It is the temperature scale that actually falls on zero.

Kevin

[David P. Valley]

All Thermographer's should know this answer. If not, you need to go back to your books.

[Barry Adair]

this was a good show/dvd, i'll let others reply with answer...although an ex-wife comes to mind

[Justo Mickey Rivera]

I used to know a kid named Kelvin C. Farhrenheit.

Cool stuff to look forward to on a Monday.

Thanks Kevin

Mic

[Kevin A. Richardson]

No worries....they will get harder

Kevin

[Gerry Beaumont]

Hi to all,

I'd like to thank Kevin for offering to help out with the QOD series and I look forward to many more IR related questions.

Thanks Kevin

Regards

Gerry

[David A. Andersen]

How about expanding this question to: "which temperature scales utilizes the same temperature difference"?

Celsius - Rankine
Fahrenheit - Celsius
Celsius - Kelvin
Kelvin - Fahrenheit
Rankine - Kelvin

[Kevin A. Richardson]

Originally Posted by dandersen

How about expanding this question to: "which temperature scales utilizes the same temperature difference"?

Celsius - Rankine
Fahrenheit - Celsius
Celsius - Kelvin
Kelvin - Fahrenheit
Rankine - Kelvin

Easy does it, David. We don't want give people brain cramps here

We're going to start slow and work our way up to the more difficult questions.

Your question above seems a bit misleading. What do you mean by "Temperature Difference"?

Absolute zero can be defined as either 0 K or 0 R.

Kelvin is equal to −273.15° on the Celsius scale
Rankine is equal to −459.67° on the Fahrenheit scale

Kevin

[Brian E. Kelly]

And here I thought it was when you were out of Vodka.

Thanks for starting off the IR questions on the easy side Kevin.

[David A. Andersen]

What do you mean by "Temperature Difference"?

That is the difference in degrees you add to each scale to obtain a known temperature rise or delta.

If you have 100 degrees F (37.8 degrees C) and you add 50 degrees F, what is the degree rise in C?

A 50F rise = 27.7C.

Not that you need to know any of this in my question.

A 100 degree rise in Celsius or Kelvin is the same as a 180 degree rise in Fahrenheit or Rankine.

So the answer to the question is Celsius - Kelvin.

What does this matter?
Delta temps are sometimes listed in K. If they are talking about a 20 degree delta K, you know it is the same as a 20 degree delta C.
Even though the temp value between K & C is 273 degrees different.
Beleive it or not, I came across this last week and I had to think about it.

Seeing everyone did so well, I figured food for thought would tide them over till next week!

[Brian E. Kelly]

Originally Posted by dandersen

Not that you need to know any of this in my question.

!

Starting to sound like an Electrician David.

[David A. Andersen]

Sorry Brian! (and others)!

[Brian E. Kelly]

Originally Posted by dandersen

Sorry Brian! (and others)!

David I hope you know me better than that, no appologies necessary.

Dammed if even kicking and screaming I don't learn something from your posts.