Technology

59424 readers

3446 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

370

"A dream. It's perfect": Helium discovery in northern Minnesota may be biggest ever in North America (www.cbsnews.com)

submitted 8 months ago by L4s to c/technology

117 comments fedilink hide all child comments

"A dream. It's perfect": Helium discovery in northern Minnesota may be biggest ever in North America::For a century, the U.S. Government-owned the largest helium reserve in the country, but the biggest exporters now are in Russia, Qatar and Tanzania. With this new discovery, Minnesota could be joining that list.

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 8 points 8 months ago (1 children)

Oh. I had that totally bass akward.

[–] [email protected] 4 points 8 months ago (1 children)

depends on manufacturer, some state it's just 50%

[–] [email protected] 3 points 8 months ago (3 children)

One of the things I read said it has to be at least 93% to make balloons float.

[–] [email protected] 9 points 8 months ago

i've took time to actually look up various manufacturers' datasheets and it's: range 50-99%, 95%, 97%, range 95-100%, 99%, unspecified or just data for pure helium. at this point i'm pretty sure there's no such thing as "balloon gas manufacturer", everyone buys 4N+ cryogenic helium and balloon gas consists of odds and ends that come from flushing piping and empty bottles with better stuff

[–] [email protected] 3 points 8 months ago (1 children)

how much do you need to float, if it's helium then 1L lifts about 1g of mass, if it's 50% helium 50% air it lifts 0.5g per liter, then it depends on how heavy balloon is in relation to its volume

[–] kalkulat 1 points 8 months ago* (last edited 8 months ago)

The balloon + helium has to be lighter than the (couple of liters of) air it displaces.

He Density (at STP) 0.1786 g/L

The density of air at sea level is about 1.2 g/L

Another interesting factoid about rare elements: Very little nickel is found in the Earth's crust. Most nickel has arrived on Earth from meteors. Usually mixed with iron, which held-back the arrival of the iron-age.