If you use the entire length of an American football field endzone to endzone that is accurate. However, most people would use the length excluding the endzones which is 100 yards. Which would make it

100 yards = 91440 mm
91440 mm / 9 mm = 1/10160 of a football field

Tyrq@lemmy.dbzer0.com · 7 pts · 39d (1 reply)

Excellent, thank you. When people use a football field as a unit of measurement, I wasn't sure if that included the end zones or not, but I figured they'd use the larger of the two, because America

Macchi_the_Slime@piefed.blahaj.zone · 3 pts · 39d

Classic mistake, you only use the larger "Endzone-to-Endzone" number in Texas. Everywhere else in the US you go with the standard 100 yards.

Soapbox@lemmy.zip · 7 pts · 39d (6 replies)

The biggest problem is that we use a mixture of both systems for different things.

As already mentioned. We measure small drinks in fluid ounces, but large bottles of soda in liters.

Those of us with 3D printers set nozzle and bed temps in Celsius, but we set our ovens to cook with in Fahrenheit.

We use metric to describe the length of runs, 5k, 10k, until you get to marathons which are 26.22 miles.

We use feet and inches for construction and woodworking for the most part, but often use millimeters for designing small parts. (at least I do. Fractions of inches are dumb.)

Most science is in the USA is done in metric. But the Mars Climate Orbiter was lost due to software reporting miles as kilometers.

Even the meme about bullets is inconsistent. Some are measured in mm some are measured in fractions or decimals of an inch. like .223 or .30-06

I really wish we could have just powered through and more strictly enforced the metrication process.

captainlezbian@lemmy.world · 2 pts · 38d

Every field of engineering in America either switched to metric after an expensive disaster caused by conversion or is waiting on the expensive disaster to switch

theacharnian@lemmy.ca · 1 pts · 38d (4 replies)

Marathons are (supposed to be) 42km, the distance from Marathon to Athens.

captain_aggravated@sh.itjust.works · 2 pts · 38d (1 reply)

Well tough, they're 26.22 miles, the distance from Marthon to Athens.

theacharnian@lemmy.ca · 1 pts · 38d

Or 227 stadia.

Soapbox@lemmy.zip · 2 pts · 38d

Yep, 42.195km technically. But here in the USA people put these 5k, 10k, etc stickers on their cars to show what runs they've done. But switch to 26.22 for marathons stickers.

TwodogsFighting@lemdro.id · 2 pts · 38d

Sockets used to be called marathon in the UK, although they weren't quite that long.

pocopene@lemmy.world · 5 pts · 38d

And also engines' volumes.

pigup@lemmy.world · 5 pts · 39d (2 replies)

Two liter soda

Reverendender@sh.itjust.works · 1 pts · 39d (1 reply)

Liter Cola

pigup@lemmy.world · 2 pts · 38d

🤯

megopie@lemmy.blahaj.zone · 4 pts · 39d (1 reply)

10mm >9mm

Phil_in_here@lemmy.ca · 1 pts · 38d

But 9 is a bigger number than 1 and 0

Alcoholicorn@mander.xyz · 4 pts · 39d

Best part is that the measurement is only tangentially related to the actual diameter of the bullet; FN 5.7×28mm, 5.56 NATO, and the soviet 5.6×39mm are all 5.7mm across.

Unlike gauge, which is always 1 over the cube root of the barrel diameter divided by the cube root of the density of lead.

doomchapel666@lemmy.zip · 4 pts · 39d

millimeters for the plugs in my earlobes too

Zephyr@sh.itjust.works · 3 pts · 38d

Just let them know their peen will sound far more impressive in cm than inches and they'll switch overnight. It's 10 is far better than 4.

Zephorah@discuss.online · 2 pts · 39d

It’s used in hospitals as well.