New Additional Space
Page 4 of 4
Future Expansion Page
.
World Travel Notes
Topic: The conversion of Celsius to Fahrenheit temperatures while traveling!
We have been doing several tours each year and found that the world is using
the Celsius temperature scale for weather reports except the USA, which is
still using the old Fahrenheit temperature scale.
Sometimes we get the weather reports from our tour leaders. We sometimes
see the Celsius temperature displays on buildings. Sometimes we get the
weather forecasts from the television news at our hotels.
Most of the travelers would try to convert the Celsius temperatures back to
the Fahrenheit scale mentally, pen & paper, or on their calculators. I decided
to see if there is a faster way to do the conversions.
I started with 25° C which is 77° F and a nice common everyday temperature.
Then I added 30° C which is 86° F and 20° C which is 68° F. I then added
35° C which is 95° F and 15° C which is 59° F.
Looking at these numbers, I see a pattern that looks like the casino dice table.
After putting these numbers in chart form, there appears to be a relationship
between the temperature conversions and dice numbers.
Using 25° C = 77° F as the base line with five temperatures above and below
the base line, converting from Celsius to Fahrenheit is faster for the normal
everyday-life temperature range of 50° to 0° C / 122° to 32° F.
Also, the five-degree Celsius increments convert to Fahrenheit temperatures
without fractions. The Celsius temperatures in between convert to Fahrenheit
with small fractions, but are usually dropped when rounding off.
See my C to F temperature conversion correlation chart. Vic WV6O
Draft vicwv6o@gmail.com
1
Although the formula to convert Celsius to Fahrenheit is C÷5x9+32=F
There appears to be a relationship between the conversion of
Celsius to Fahrenheit and the casino dice table for the normal
everyday-life temperature range of 50° to 0 C / 122° to 32 F.
Celsius Dice Numbers Mathematics Fahrenheit
50° 12 & 2 120 + 2 122°
45 11 & 3 110 + 3 113
40 10 & 4 100 + 4 104
35 9 & 5 90 + 5 95
30 8 & 6 80 + 6 86
25 7 & 7 70 + 7 Base Line 77
20 6 & 8 60 + 8 68
15 5 & 9 50 + 9 59
10 4 & 10 40 + 10 50
5 3 & 11 30 + 11 41
0 2 & 12 20 + 12 32
For Celsius temperatures 1 or 2 degrees above or below the listed 5-degree
increments, add or subtract 2 or 4 degrees to or from the listed Fahrenheit
temperatures to come within 0.2 or 0.4 degrees of the actual temperatures.
C to F temperature conversion correlation chart created by Vic WV6O
Draft vicwv6o@gmail.com
2
For every 5-degree change in the Celsius scale, there is a corresponding
9-degree change in the Fahrenheit scale. For every 1 degree change in the
Celsius scale, there is a 1.8 degree change in the Fahrenheit temperature.
For Celsius temperatures 1 or 2 degrees above or below the listed 5-degree
increments, add or subtract the factors of 1.8 or 3.6 degrees to or from the
listed Fahrenheit temperatures to get of the actual temperatures in decimal.
For the exact Fahrenheit temperatures:
If the Celsius temperature is 1 degree above the listed 5-degree increment,
add 1.8 degrees to the listed Fahrenheit temperature.
Example: 31° C is 86 + 1.8 = 87.8° F
If the Celsius temperature is 2 degrees above the listed 5-degree increment,
add 3.6 degrees to the listed Fahrenheit temperature.
Example: 37° C is 95 + 3.6 = 98.6° F
Note: 37° C / 98.6° F is also the normal body temperature
If the Celsius temperature is 1 degree below the listed 5-degree increment,
subtract 1.8 degrees from the listed Fahrenheit temperature.
Example: 14° C is 59 -1.8 = 57.2° F
If the Celsius temperature is 2 degrees below the listed 5-degree increment,
subtract 3.6 degrees from the listed Fahrenheit temperature.
Example: 18° C is 68 -3.6 = 64.4° F
C to F temperature conversion correlation system created by Vic WV6O
Draft vicwv6o@gmail.com
3
