Technology

60052 readers

4042 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 2 years ago

MODERATORS

[email protected]

799

This was the first result on Google (lemmy.ml)

submitted 9 months ago by [email protected] to c/[email protected]

238 comments fedilink hide all child comments

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

[–] [email protected] 2 points 9 months ago

Since liquid water can't be compressed

Common misconception - it can, just not very much, so the volume change is tiny, and in practice, there's usually something else in the system that is changing volume by a larger amount- like air bubbles, or if there's anything elastic in the plumbing, it will stretch - but regardless, water absolutely can be under pressure.

resistance only reduces current, but when I think of hair in a pipe, the pressure after the obstruction would also be lower

You are correct, in electronics, resistance drops voltage (assuming the load is in series with the resistance). In fact, a cheap quick and dirty digital to analog converter uses a bunch of resistors to supply different voltages...