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Z to Fahrenheit

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formula123 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote formula123 Quote  Post ReplyReply Direct Link To This Post Topic: Z to Fahrenheit
    Posted: 30 Jun 2019 at 11:06am
Z-value can be defined in several ways e.g. the number of degrees Fahrenheit or Centigrade (Celsius) required for a thermal death time curve to traverse 1 log cycle. Note it is the number of degrees in the appropriate temperature scale that is required rather than the actual temperature. The 9/5 is an adaption of the normal equation for converting F to C.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Api Quote  Post ReplyReply Direct Link To This Post Posted: 30 Jun 2019 at 6:25am
Can you pls help to elaborate why multiple with 9/5 ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote formula123 Quote  Post ReplyReply Direct Link To This Post Posted: 14 Oct 2011 at 9:00pm
Welcome back and thanks for posting in the forum.
You want to convert a z-value in Celsius to a z-value in Fahrenheit? I presume that you have converted say 10° C to 50° F? This is probably where you are going wrong. You cannot convert z-values in the normal way you convert from one temperature measurement system to another. In your case you need to convert a change in the number of Celsius degrees to Fahrenheit degrees by multiplying by 9/5. I have attached a screen shot of how to do this very simple calculation using a spreadsheet.
 
 
Z converter spreadsheet
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Post Options Post Options   Thanks (0) Thanks(0)   Quote beachgirl Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 2011 at 8:31pm
Hi! Back again.
 
We need to turn pile of Brit Zs to US units. 10C is 50F! Something wrong
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