# Metrication of the angles (fc)

### I respect the effort of the metric system, but it is not quite done...

Many people think that the metric system is alright. I am one of those. It is also known as the International System of Units (called the SI units - the modern form of the metric system). Unusually, exceptional Americans didn’t fully adopt it. Yet.

I like very much the Metric (SI) Prefixes: mega, giga, kilo, milli, micro,…

They work fine because of the decimal numeral system. We just move the decimal point to the left or right of the numerals. Everything else stays the same. Easy.

## Except for ….

The coherent metric (SI) unit for angles is the radian. There are 2π radians in 360°. The SI Brochure also allows the use of degrees (or degrees, minutes, seconds) with the SI, although they are not SI units. There is also a unit called the gradian (usually abbreviated grad) where 400 grads = 360°.

Confusing? Yes. It is just terrible. Try to calculate anything with this. It is a nightmare.

# New SI unit “fc” - full circle

I propose to use the full circle as a unit of measurement, abbreviated to **fc**. Easy.

Then we use **mfc **as “milli full circle” for measuring the angles. It is a thousandth of a circle. For example:

`90° = 0,5π rad = 250 mfc = 0,25 fc`

180° = π rad = 500 mfc = 0,5 fc

360° = 2π rad = 1000 mfc = 1 fc

Isn’t that fantastic and super easy to understand and calculate?

For true physics calculations where we usually use radians, we can easily say

`1 fc = 2π`

And all the formulas and calculations stay the same.

We can use other prefixes where needed, for example, a millionth of a full circle **µfc. **This could be used for geography coordinates, they are just angles.

# A day is just a circle

A day is an average time period of a full rotation of the Earth with respect to the Sun. There are many subtle differences between true astronomy and the average we use in our day-to-day life. Usually, a day has 86,400 seconds, but sometimes we have a leap second because “nature is not perfect”.

The horrible units of hours, minutes, and seconds are impossible to use in any calculation. They are so archaic that hurts.

I propose we just use the “day” as a SI Unit, abbreviated to **d**. Then we have “milli day” **md** as something close to a minute. In everyday life, we don’t need anything else.

`1000 md = 1 d = 24 H`

500 md = 0,5 d = 12 H

50 md = 0,05 d = 1,2 H = 1H 12 minutes

10 md = 0,01 d = 0,24 H = 14,4 minutes

1 md = 0,001 d = 0,024 H = 1,44 minutes (close enough to a minute)

For sports and physics, we need something smaller. We can use the “micro day”, it is one-millionth of the day.

`1000 µd = 1 md = 1,44 minutes = 86,4 seconds`

10 µd = 0,864 seconds (close enough to a second)

1 µd = 0,0864 seconds

## Nobody listens

I didn’t yet find a place where somebody would listen to what I have to say about this. So I must relieve my chest by writing it in my substack.

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