tag:blogger.com,1999:blog-1089686321959926513.post3746347356866280722..comments2024-01-01T21:14:20.865-07:00Comments on How It Looks From Here: Converting Units of TemperatureRichhttp://www.blogger.com/profile/10618557523844826402noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-1089686321959926513.post-4906266199303475832018-08-01T13:14:01.884-06:002018-08-01T13:14:01.884-06:00When converting 99.2 F to C, the answer is 37.3 (i...When converting 99.2 F to C, the answer is 37.3 (if keeping 3 significant figures). However, 37.3 C converts to 99.1 (99.14 rounded down). It would seem, then, that to properly preserve precision, the initial conversion should store 37.33. Any advice on how to handle this?Dennis Ballancehttps://www.blogger.com/profile/04226208073131706910noreply@blogger.comtag:blogger.com,1999:blog-1089686321959926513.post-46687986485741578252015-07-17T11:20:58.288-06:002015-07-17T11:20:58.288-06:00Also, bear in mind that addition and subtraction w...Also, bear in mind that addition and subtraction work differently than multiplication and addition. When I add 25.00 to an exact number, no matter how many digits it has, I get to keep two places after the decimal. 273.15 + 25.00 = 298.15. 273.15 + 25.00000 = 298.15000.<br />If both numbers are inexact, it is different: 200.01 + 25.00 = 225.01, but 200.0 + 25.00 = 225.0.Richhttps://www.blogger.com/profile/10618557523844826402noreply@blogger.comtag:blogger.com,1999:blog-1089686321959926513.post-11230020827655029592015-07-17T11:15:31.853-06:002015-07-17T11:15:31.853-06:00Here is why it is confusing. 0 degrees Celsius is...Here is why it is confusing. 0 degrees Celsius is exactly 273.15 Kelvin by definition. Even though 273.15 might seem to have only five significant figures, it is an exact number. The significant figures are therefore limited by your measurements, not the use of an exact number. Read up on exact numbers in significant figures. Other examples of exact numbers are the speed of light and also exact integers. If I have exactly 2 masses that each have a mass of 1.23 g, then 2 x 1.23 = 2.46, not 2.Richhttps://www.blogger.com/profile/10618557523844826402noreply@blogger.comtag:blogger.com,1999:blog-1089686321959926513.post-931870280025995532015-07-12T06:50:57.443-06:002015-07-12T06:50:57.443-06:00I am looking for guidance on significant figures i...I am looking for guidance on significant figures in temperature readings. The statement in the conversion of celsius to kelvin seems incorrect, as the Kelvin temperature has one more significant figure than the celsius temperature. The decimal places are the same...<br /><br />Sign me,<br /><br />Confused...Anonymousnoreply@blogger.com