Measurement Question for the Smart Ones

[courtneybcca]

okay so is a pm a picometer? And what is the conversion on the metric system for a Angstroms?

thanks peeps

 

[biteme]

okay so is a pm a picometer? And what is the conversion on the metric system for a Angstroms?

thanks peeps

I guarantee you there are some guys using the search engine right now to answer this question.

 

[courtneybcca]

well I hope so because I can't find it

 

[juiceddreadlocks]

a pm is a private message and i think angstroms is 10^-13 meters or something. its commonly used to measure bond lengths and x-ray crystallography resolution

 

[samoth]

an angstrom is 10^-10m
pico prefix is 10^-12

 

[samoth]

i think angstroms is 10^-13 meters or something. its commonly used to measure bond lengths and x-ray crystallography resolution

Close, but remember in bond lengths, the numbers are only a factor of 10 from the more commonly used nanometers. That's how I always remember that A=10^-10 m

 

[courtneybcca]

an angstrom is 10^-10m
pico prefix is 10^-12

okay but when they say pm is that a picometer?

 

[juiceddreadlocks]

Close, but remember in bond lengths, the numbers are only a factor of 10 from the more commonly used nanometers. That's how I always remember that A=10^-10 m

wow, awesome. never heard it like that; and ive used nano=9 before. grr..

 

[samoth]

okay but when they say pm is that a picometer?

p is the defined prefix for pico in the metric system. I'm not sure who "they" are, but it's probably some old blokes from England or something. It's one of those things thats implicitly implied/assumed, so you will never see any person or book saying "p is for pico".

 

[courtneybcca]

no no I know that but when put together pm.... does that mean a picometer?

 

[courtneybcca]

I am trying to give you two karma but it wont let me because I need to spread it around thank you for helping me!!!

 

[samoth]

no no I know that but when put together pm.... does that mean a picometer?

That would be assumed, but it would depend on the context in which it's used. It could be momentum times mass for all I know, lol. Lowercase p is pico, uppercase is 10^15m. It could be rho, too, so it could be something like the dot product of charge density and mass or something.

Anyways, the most likely answer to your question is yes. (Unless one of the letters is bold, or has one or two dots on top of it, or a bar, or a hat, or an atilda, or if if there's a line crossed through either one, then it's no.)

 

[courtneybcca]

thank you so much!!!! pic for you MUAH!!