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==Explanation== | ==Explanation== | ||
+ | {{incomplete|Explanation seems fine but maybe some comment on why the chosen labels is not very relevant for a temperature scale . Fahrenheit 0 is not interesting for instance compared to 0 Celsius. Brief mention in explanation and a new column with notes in the table.}} | ||
− | Just like in [[1292: Pi vs. Tau]], [[Randall]] tries to unify two measurement systems by averaging both values, with little success | + | Just like in [[1292: Pi vs. Tau]], [[Randall]] tries to unify two measurement systems by averaging both values, assumably with little success. |
There are several {{w|Scale_of_temperature|temperature scales}} actively used in different parts of the world of for different purposes, including {{w|Celsius}} and {{w|Fahrenheit}}, but e.g. also {{w|Kelvin}} and {{w|Rankine_scale|Rankine}}. | There are several {{w|Scale_of_temperature|temperature scales}} actively used in different parts of the world of for different purposes, including {{w|Celsius}} and {{w|Fahrenheit}}, but e.g. also {{w|Kelvin}} and {{w|Rankine_scale|Rankine}}. | ||
− | The debate on whether to use Fahrenheit or Celsius is, just like the one between {{w| | + | The debate on whether to use Fahrenheit or Celsius is, just like the one between {{w|Imperial_units|imperial}} and {{w|Metric system|metric}} units, one that is mostly restricted to the US. Most other countries have already switched from Fahrenheit to Celsius or have always used Celsius. In scientific circles, even in the US, only Celsius (and Kelvin) are used. |
The conversion factors between Celsius and Fahrenheit are: | The conversion factors between Celsius and Fahrenheit are: | ||
− | :°C = (°F − 32) | + | :°C = (°F − 32) * 5 / 9 |
− | :°F = °C | + | :°F = °C * 9 / 5 + 32 |
− | which | + | which indeed make the average value of °C and °F: |
− | + | :°ϵ = °C * 7 / 5 + 16 = (°F * 7 - 80) / 9 | |
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− | [[Randall]] | + | [[Randall]] choose to name his new unit of temperature Felsius (a {{w|portmanteau}} of Fahrenheit and Celsius). |
− | + | The title text states that the symbol he chose to represent this unit also is the average of two other symbols. Visually, it is assumed to be a combination of Celsius and Fahrenheit (a C with a crossbar), but it is actually the unrelated symbols for the {{w|Euro sign|euro}} (€) and the Greek lunate {{w|epsilon}} (ϵ). We have used the latter (which, like Randall's symbol and unlike the Euro symbol, has a single crossbar) in this explanation and transcript, but the crossbar in the symbol as actually drawn by Randall continues to the left (like the Euro symbol and unlike the lunate Epsilon). | |
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− | The title text states that the symbol he chose to represent this unit also is the average of two other symbols. Visually, it is assumed to be a combination of Celsius and Fahrenheit (a C with a crossbar), but it is actually the unrelated symbols for the {{w|Euro sign|euro}} (€) and the Greek lunate {{w|epsilon}} (ϵ). Randall's symbol has a single crossbar | ||
{|class="wikitable" | {|class="wikitable" | ||
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|} | |} | ||
− | In doing all this, Randall has fallen into the trap of creating a new temperature scale/standard: see [[927: Standards]] | + | In doing all this, Randall has fallen into the trap of creating a new temperature scale/standard: see [[927|927: Standards]]. |
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− | + | Randall has also compared Celsius and Fahrenheit scales earlier in [[1643: Degrees]]. | |
=== Table of Given Conversions & Additional === | === Table of Given Conversions & Additional === | ||
{| class="wikitable" | {| class="wikitable" | ||
− | ! | + | !°ϵ!!°C!!°F!!Note |
|- | |- | ||
+ | | style="text-align:right;" |156.0 | ||
| style="text-align:right;" |100.0 | | style="text-align:right;" |100.0 | ||
− | | style="text-align:right;" | | + | | style="text-align:right;" |211.9 |
− | |||
||Water boils at sea level (1 atmosphere) | ||Water boils at sea level (1 atmosphere) | ||
|- | |- | ||
+ | | style="text-align:right;" |91.6 | ||
| style="text-align:right;" |54.0 | | style="text-align:right;" |54.0 | ||
− | |||
| style="text-align:right;" |129.2 | | style="text-align:right;" |129.2 | ||
||World heat record (per [https://en.wikipedia.org/wiki/Highest_temperature_recorded_on_Earth Wikipedia]) | ||World heat record (per [https://en.wikipedia.org/wiki/Highest_temperature_recorded_on_Earth Wikipedia]) | ||
|- | |- | ||
+ | | style="text-align:right;" |67.8 | ||
| style="text-align:right;" |37.0 | | style="text-align:right;" |37.0 | ||
− | |||
| style="text-align:right;" |98.6 | | style="text-align:right;" |98.6 | ||
||Body temperature (accepted average) | ||Body temperature (accepted average) | ||
|- | |- | ||
+ | | style="text-align:right;" |46.8 | ||
| style="text-align:right;" |22.0 | | style="text-align:right;" |22.0 | ||
− | |||
| style="text-align:right;" |71.6 | | style="text-align:right;" |71.6 | ||
||Room temperature (maximum per [https://ahdictionary.com/word/search.html?q=room+temperature American Heritage Dictionary]) | ||Room temperature (maximum per [https://ahdictionary.com/word/search.html?q=room+temperature American Heritage Dictionary]) | ||
|- | |- | ||
+ | | style="text-align:right;" |16.0 | ||
| style="text-align:right;" |0.0 | | style="text-align:right;" |0.0 | ||
− | |||
| style="text-align:right;" |32.0 | | style="text-align:right;" |32.0 | ||
− | || | + | ||Water freezes on Earth (1 atmosphere); 0°C reference |
|- | |- | ||
+ | | style="text-align:right;" |0.0 | ||
| style="text-align:right;" |−11.4 | | style="text-align:right;" |−11.4 | ||
− | |||
| style="text-align:right;" |11.4 | | style="text-align:right;" |11.4 | ||
− | || | + | ||0°ϵ reference |
|- | |- | ||
+ | | style="text-align:right;" |−8.9 | ||
| style="text-align:right;" |−17.8 | | style="text-align:right;" |−17.8 | ||
− | |||
| style="text-align:right;" |0.0 | | style="text-align:right;" |0.0 | ||
− | ||0°F reference | + | ||Temperature of the equilibrium of the chemical reaction between water and ammonium chloride; 0°F reference. |
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|- | |- | ||
| style="text-align:right;" |−40.0 | | style="text-align:right;" |−40.0 | ||
| style="text-align:right;" |−40.0 | | style="text-align:right;" |−40.0 | ||
| style="text-align:right;" |−40.0 | | style="text-align:right;" |−40.0 | ||
− | ||Equivalence point (exactly | + | ||Equivalence point (exactly −40) |
|- | |- | ||
+ | | style="text-align:right;" |−366.4 | ||
| style="text-align:right;" |−273.2 | | style="text-align:right;" |−273.2 | ||
− | |||
| style="text-align:right;" |−459.7 | | style="text-align:right;" |−459.7 | ||
− | ||Absolute zero (exactly −273.15°C | + | ||Absolute zero (exactly −273.15°C) |
|} | |} | ||
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==Transcript== | ==Transcript== | ||
:[A thermometer is shown where the temperature is indicated, with a red column of liquid, to be just above room temperature. This can be seen from the five labels belonging to five lines pointing at the scale. None of these coincide with the 14 ticks on the actual scale for the thermometer. Below the last label is the formula for calculating the temperature on this scale.] | :[A thermometer is shown where the temperature is indicated, with a red column of liquid, to be just above room temperature. This can be seen from the five labels belonging to five lines pointing at the scale. None of these coincide with the 14 ticks on the actual scale for the thermometer. Below the last label is the formula for calculating the temperature on this scale.] | ||
− | : | + | :92°ϵ world heat record |
− | : | + | :68°ϵ body temperature |
− | : | + | :47°ϵ room temperature |
− | : | + | :16°ϵ water freezes |
− | : | + | :–9°ϵ 0°F |
− | : | + | :°ϵ=7×°C/5+16=(7×°F–80)/9 |
+ | |||
:[Caption below the panel:] | :[Caption below the panel:] | ||
− | :Since the Celsius vs Fahrenheit debate has proven surprisingly hard to resolve, as a compromise I've started using Felsius ( | + | :Since the Celsius vs Fahrenheit debate has proven surprisingly hard to resolve, as a compromise I've started using Felsius (°ϵ), the average of the two. |
==Implementations== | ==Implementations== | ||
− | An implementation of Felsius is available at [http://www.weatherinfelsius.us Weather In Felsius], using a location based on user's IP address and accepting US ZIP codes | + | An implementation of Felsius is available at [http://www.weatherinfelsius.us Weather In Felsius], using a location based on user's IP address and accepting US ZIP codes. |
{{comic discussion}} | {{comic discussion}} |