Arithmetic that makes you cringe

[Kim]

IFF reader knows what a hectare is.

I'm not entirely convinced that anyone^[1] knows what a hectare is.  It's one of those things you have to look up each time....


_{[1] Apart from farmers and mistake agents.  And I'm sceptical about the mistake agents.}

[hatler]

It's easy. 

A hectare is about two and half acres, and an acre is a furlong long by a chain wide, as any fule kno.

[Davef]

IFF reader knows what a hectare is.

I'm not entirely convinced that anyone^[1] knows what a hectare is.  It's one of those things you have to look up each time....


_{[1] Apart from farmers and mistake agents.  And I'm sceptical about the mistake agents.}

One hectare is a hect of ares
An are is a hect of square metres.
What could be simpler.


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[mrcharly-YHT]

It's 1% of a square kilometre.

[fuaran]

A hectare is about 1 rugby union pitch, including the bit behind the goals. Or a bit more than a football pitch.

[Kim]

IFF reader knows what a hectare is.

I'm not entirely convinced that anyone^[1] knows what a hectare is.  It's one of those things you have to look up each time....


_{[1] Apart from farmers and mistake agents.  And I'm sceptical about the mistake agents.}

One hectare is a hect of ares
An are is a hect of square metres.
What could be simpler.

It's the hects that are the problem.  See also hectopascals.

[Davef]

IFF reader knows what a hectare is.

I'm not entirely convinced that anyone^[1] knows what a hectare is.  It's one of those things you have to look up each time....


_{[1] Apart from farmers and mistake agents.  And I'm sceptical about the mistake agents.}

One hectare is a hect of ares
An are is a hect of square metres.
What could be simpler.

It's the hects that are the problem.  See also hectopascals.

I think deci and deca are worse. Get those two the wrong way round would be a hectoblunder.


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[Cudzoziemiec]

Better to write deka than deca. Not only is it more distinct from deci, but it preserves the Greek/Latin, hard going up/soft coming down distinction.

And what's the problem with hectopascals?

[Tim Hall]

A hectare is about 1 rugby union pitch, including the bit behind the goals. Or a bit more than a football pitch.

I was going to write that. Before The Event we discussed the fires in NSW at Scouts. Got them to visualise a hectare by comparing it to a rugby pitch, then worked out how many are in a grid square. Then looked at a map of NSW. The largest fire was $scarynumber of hectares. A bit less than the size of Surrey, Sussex and Kent put together.

[Pingu]

https://www.theguardian.com/environment/2020/aug/18/atlantic-ocean-plastic-more-than-10-times-previous-estimates

That would indicate a concentration in the Atlantic of about 200 million tonnes of these common plastics.

 

[Davef]

https://www.theguardian.com/environment/2020/aug/18/atlantic-ocean-plastic-more-than-10-times-previous-estimates

That would indicate a concentration in the Atlantic of about 200 million tonnes of these common plastics.

 

That is a lot of plastic. Arithmetic seems in the right ballpark. Not sure concentration is the right word.

[LittleWheelsandBig]

A concentration of large amounts of plastic could be something like the Great Garbage Patch, relative to less polluted waters. Trying to be kind here.

[Pingu]

https://www.theguardian.com/environment/2020/aug/18/atlantic-ocean-plastic-more-than-10-times-previous-estimates

That would indicate a concentration in the Atlantic of about 200 million tonnes of these common plastics.

 

That is a lot of plastic. Arithmetic seems in the right ballpark. Not sure concentration is the right word.

Concentration is definitely not the right word 

[hellymedic]

Concentration is the amount of something in a given volume so it's [weight] per [volume]. Both must be specified.

[Davef]

The estimated concentration is 200MT per Atlantic, an atlantic’ being an obscure non SI unit of volume equal to 310,000,000,000,000,000 cubic metres. 

The zA zeptoAtlantic is a more useful unit for day to day use.
I had 1.7 zA of Guinness yesterday lunchtime.

EDIT: several

[Cudzoziemiec]

It's only wrong if they've tried to make it maths. Otherwise it's just a lot in one place.
https://g.co/arts/htotPu7pp5KwwdMm6

[Tim Hall]

The estimated concentration is 200MT per Atlantic, an atlantic’ being an obscure non SI unit of volume equal to 310,000,000,000,000,000 cubic metres. 

The zA zeptoAtlantic is a more useful unit for day to day use.
I had 1.7 zA of Guinness yesterday lunchtime.

EDIT: several

What's that in Olympic swimming pools?

[ElyDave]

A hectare is about 1 rugby union pitch, including the bit behind the goals. Or a bit more than a football pitch.

Depends on the size of the in-goal areas, and the width of the pitch, works for something like Twickenham at a full 70m wide and with 22m in-goals, but not a lot of the cabbage patches I used to referee on

Wasn't an acre by definition the area of land that one man with one ox could plough in a day?  I'm not sure which ox was used for the furlong x chain normalisation

[Mr Larrington]

The estimated concentration is 200MT per Atlantic, an atlantic’ being an obscure non SI unit of volume equal to 310,000,000,000,000,000 cubic metres. 

The zA zeptoAtlantic is a more useful unit for day to day use.
I had 1.7 zA of Guinness yesterday lunchtime.

EDIT: several

What's that in Olympic swimming pools?

Mr Hall is awake earlier than I am.  Damn you, Mr Hall!  Damn you to SWINDON!

[PeteB99]

The estimated concentration is 200MT per Atlantic, an atlantic’ being an obscure non SI unit of volume equal to 310,000,000,000,000,000 cubic metres. 

The zA zeptoAtlantic is a more useful unit for day to day use.
I had 1.7 zA of Guinness yesterday lunchtime.

EDIT: several

What's that in Olympic swimming pools?

Mr Hall is awake earlier than I am.  Damn you, Mr Hall!  Damn you to SWINDON!

It's 5123.44 times the area of Wales.

We just need the conversion factor for Wales / Olympic swimming pools to finish the calculation.

[Mr Larrington]

Lake Superior is about 4 times the size of Wales, if that's any help.

- from “Things I Learned On My Holibobs”, 2016 Edition.

[Davef]

We have lost a dimension, slipping from volume to area.

[citoyen]

We just need the conversion factor for Wales / Olympic swimming pools to finish the calculation.

There used to be a website for this but it disappeared some time ago. Also had other useful conversion factors like lengths in double decker buses.

[Cudzoziemiec]

We have lost a dimension, slipping from volume to area.

It got stuck in the Tardis.

[cygnet]

The Register standards converter still exists, although as a Wales is a unit of area, you would need a Wales x Double-decker bus equivalent to O-SSPs