InternetCitizen2@lemmy.world to Lemmy Shitpost@lemmy.world · 4 months agoVirgin Physicistslemmy.worldimagemessage-square21linkfedilinkarrow-up113arrow-down10 cross-posted to: science_memes@mander.xyz
arrow-up113arrow-down1imageVirgin Physicistslemmy.worldInternetCitizen2@lemmy.world to Lemmy Shitpost@lemmy.world · 4 months agomessage-square21linkfedilink cross-posted to: science_memes@mander.xyz
minus-squareabcd@feddit.orglinkfedilinkEnglisharrow-up1·4 months agoWithout using fancy components: Just simply adding a 6.2 and a 2400 Ohm resistor in parallel already gives you 6.18402 Ohm ⚡️
minus-squareCornelius_Wangenheim@lemmy.worldlinkfedilinkarrow-up1·4 months agoReal world resistors usually have a tolerance of ±5%, so you’ll never get anything that precise.
minus-squarelemming741@lemmy.worldlinkfedilinkEnglisharrow-up2·edit-24 months agoThat’s why I keep a roll of 20 AWG nichrome on hand. Spool off 9.7195853528209 feet and it’ll be bang on.
minus-squareLv_InSaNe_vL@lemmy.worldlinkfedilinkarrow-up0·4 months agoSo 1 inch of your wire would weigh ~0.0987 grams, so to measure down to 8.6350242338508 inches of wire your scale would need to weigh down to ~0.00000000000007 grams. Which is the weight of about a dozen atoms or so.
minus-squarelemming741@lemmy.worldlinkfedilinkEnglisharrow-up1·4 months agoYeah which is why you use a Kibble balance. Are you sure you’re cut out for this kind of work?
Without using fancy components: Just simply adding a 6.2 and a 2400 Ohm resistor in parallel already gives you 6.18402 Ohm ⚡️
Real world resistors usually have a tolerance of ±5%, so you’ll never get anything that precise.
That’s why I keep a roll of 20 AWG nichrome on hand. Spool off 9.7195853528209 feet and it’ll be bang on.
So 1 inch of your wire would weigh ~0.0987 grams, so to measure down to 8.6350242338508 inches of wire your scale would need to weigh down to ~0.00000000000007 grams. Which is the weight of about a dozen atoms or so.
Yeah which is why you use a Kibble balance. Are you sure you’re cut out for this kind of work?