I'll publically display some stupidity, as I was mentally processing the below that the mass of the proton was one over Avogadro's number, I inverted N_a and did not get what I expected. Which was something of the order of 10^-27 kg.
Only after the below post did it dawn on me the inverted N_a was giving the mass of the proton in grams.
|-----Original Message-----
|From: Phys-l [mailto:phys-l-bounces@phys-l.org] On Behalf Of richard
|lindgren
|Sent: Saturday, June 29, 2013 2:19 PM
|To: Phys-L@Phys-L.org
|Subject: Re: [Phys-L] playing for keeps
|
|Good call,
|Took me years after grad school when teaching to realize this.
|I wonder how many others still don't get it.
|Richard Lindgren
|