i^x = 2

[RPNerd]

(11-12-2024 03:22 PM)klesl Wrote:  It is interesting the americans uses metric system e.g. in pharmacy industry, science. Not sure if it is same in the Great Britain.

It is. In the whole of the UK, including Northern Ireland, not just Great Britain.

Dosage of medications is expressed in metric units and is calculated based on the patient's body weight in kg. BMI (Body Mass Index) is calculated based on the weight in kg and the height in metres (not meters, a meter is a deviced used for measuring something, like a gas meter, while the metre is the SI unit of length).

[AnnoyedOne]

(11-11-2024 05:31 PM)bxparks Wrote:  (I'm amused how a thread about complex numbers turned into a discussion about metric road signs..)

I'm waiting for someone to post a pic of a 60i speed limit sign.

Is the 'i' for "imperial", sqrt(-1), or what?

Is the speed limit "imaginary" or am I supposed make a 90 degree left/right turn?

This is a "complex" problem

A1

[cdmackay]

It may be just me, or a Scots/age thing, but does anyone else use degrees C for cold weather, but degrees F for hot?

I say, brr! it's minus 5 (C) today. Or, it's 80 degrees (F) today, scorchio!

Perhaps it's just me

[RPNerd]

(11-12-2024 04:51 PM)AnnoyedOne Wrote:  Is the speed limit "imaginary" or am I supposed take a 90 degree left/right turn?

The argument of \(i\), aka \(e^{i\frac{\pi}2}\), is \(\frac{\pi}2\) or 90° anticlockwise, so my best guess is that the speed limit is 60 (choose your own unit) and only applies if you're turning left. It's imaginary if you're going straight ahead, in which case the cop that pulls you over can only give you an imaginary speeding fine!

[RPNerd]

(11-12-2024 05:04 PM)cdmackay Wrote:  It may be just me, or a Scots/age thing, but does anyone else use degrees C for cold weather, but degrees F for hot?

I say, brr! it's minus 5 (C) today. Or, it's 80 degrees (F) today, scorchio!

I tend to use metric for both. Furthermore, if someone gives me a temperature in °F I have to stop and convert it mentally to °C.

Not so sure it's an age thing because I'm not exactly young myself nearing the end of my 6th decade, but I'm not a Scot...

[AnnoyedOne]

(11-12-2024 05:04 PM)cdmackay Wrote:  I say, brr! it's minus 5 (C) today.

Yeah.

((9/5) * -5) + 32 = 23F

just doesn't have the same "ring" to it

A1

PS: Now -40 is the same in both C and F. And that is cold!

[lrdheat]

In Laredo, Texas, where yesterday was the 205th day of the year to reach 32.2C or above, 90F seems to convey the hot feel to the air better. Still, being a meteorologist, I prefer the metric system. The U.S. tried to shift to metric in 1978. If, after the 6 months of showing both measures, only metric values were given, perhaps the shift would have been successful!