Talk:3065: Square Units

I like this one :) reminds me of trying to use recipes in imperial units with metric equipment 162.158.108.29 19:48, 19 March 2025 (UTC)

I so want to stand outside Randall's office holding up {{citation needed}} for not giving an actual citation on the title text. 162.158.175.159 20:07, 19 March 2025 (UTC)

We should start using ares as a common unit of measure. https://www.britannica.com/science/are 172.69.135.15 20:09, 19 March 2025 (UTC)

We have done, some still do: Hectare#Are 172.70.163.70 21:20, 19 March 2025 (UTC)

I really hate when people use "metric ton" instead of the correct megagram (Mg). SDSpivey (talk) 12:28, 20 March 2025 (UTC)

The area of eaten vegetation is all well and good, but we really need to know the total volume consumed. In barn-megaparsecs, ideally. 172.71.241.89 21:26, 19 March 2025 (UTC)

I just got the mail notification for this and the previous comic at the same time. I would say that Randall forgot to send out the previous one before, but surely this is automated, so I guess something went wrong with that setup. Fabian42 (talk) 00:01, 20 March 2025 (UTC)

I really want to know what the 80-fold error was now Thief (talk) 10:54, 20 March 2025 (UTC)

Here's an error in chemical names instead--Diphenhydramine (Benadryl) occasionally appears as diphenhydrazine, which (if it existed) might be a rocket fuel. Google for it, just for scientific fun. Rocket flight to Australia, now in your local pharmacy! 172.69.71.207 11:38, 20 March 2025 (UTC)

There's a dangerous point of confusion between diphenhydramine and dimenhydrinate (Gravol). In medical contexts, the two are often given differing capitalizations to emphasize the differences between the words, to reduce the risk of patients being given the wrong one (e.g. dimenhyDRINATE vs. diphenhydrAMINE). BunsenH (talk) 14:51, 20 March 2025 (UTC)

Realistically, if "diphenhydrazine" is diphenylhydrazine, it would be a much poorer rocket fuel than hydrazine. It's a known substance, used in chemical manufacture, melting point a bit above the boiling point of water, moderately nasty in terms of health risks. Flammable, yes, but not particularly exciting. BunsenH (talk) 15:05, 20 March 2025 (UTC)

A particularly vexing origami issue.172.71.178.156 14:42, 20 March 2025 (UTC)

The land area of Australia really depends on when it last rained. There are very large areas that will be completely dry prior to rain that will be flooded after. SDSpivey (talk) 12:28, 20 March 2025 (UTC)

You should never write `square cm`, etc. but always `cm²`. Same for seemingly standard abbreviations: Don't write `ccm` for "cubic centimeter", but `cm³`. Even though, in spoken language "square centimeter" is correct. Another confusion can sometimes arise from not knowing that squaring or cubing binds less than the centi-/kilo-/... prefix. I.e., `cm³` is `(0.01m)³` not `0.01(m³)`. A liter (`l`) is `0.001m³` or `1dm³ = (0.1m)³`. A milliliter is `0.001l = 0.000001m³ = (0.01m)³ = 1cm³` --172.69.109.92 12:48, 20 March 2025 (UTC)

All you need to remember is:

"X units square" = a square of X units = (X units)² = X² (units²)

"X square units" = X times a square unit = X (units²) = (√X units)²

"X prefixunits" is (X × prefix) units, for the sake of preserving the units so "7 decagrammes" is "70 grammes" (or 0.07 kg, if you need that, for whatever reason) [though not to be confused with "grammage", which is "grammes per square metre"!] and "450 nanometres" is "450×10^-9 metres" or "4.5×10^-7 metres" 172.69.195.62 14:26, 20 March 2025 (UTC)