Editing Talk:2100: Models of the Atom
Please sign your posts with ~~~~ |
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 26: | Line 26: | ||
:When cartoon characters are dizzy, they are often depicted with stars or birds circling their head. Since xkcd is a comic & thus shares the hand-drawn aesthetic, I presume that Randall is referencing [https://tvtropes.org/pmwiki/pmwiki.php/Main/CirclingBirdies the "Circling Birds" trope]. | :When cartoon characters are dizzy, they are often depicted with stars or birds circling their head. Since xkcd is a comic & thus shares the hand-drawn aesthetic, I presume that Randall is referencing [https://tvtropes.org/pmwiki/pmwiki.php/Main/CirclingBirdies the "Circling Birds" trope]. | ||
:[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 20:23, 18 January 2019 (UTC) | :[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 20:23, 18 January 2019 (UTC) | ||
β | |||
The absolute scale of physical constants seldom has specific meaning. See h vs Δ§ (h bar). Neither is right or wrong and they can be used interchangeably (when putting the 2*pi in or removing it at the same time). The same is true for dimensionless constants. E.g. 4*pi *(h bar) = 2 *(h). So the 4*pi as dimensionless constant is as correct as 2 or any other dimensionless number, as you can rescale other constants. If you redefine some natural constants, the value 137 also changes. Most dimensionless constants can be deduced from mathematics with a known or yet unknown underlying physical theory. For example all chemical properties of elements (=chemical constants) can be calculated from the underlying physics by very complex mathematical terms. For an excursion that also mathematical constants are open for debate, see the [[1292: Pi vs. Tau|Pi vs Tau]] debate. Both are correct. Sebastian --[[Special:Contributions/172.68.110.46|172.68.110.46]] 15:16, 18 January 2019 (UTC) | The absolute scale of physical constants seldom has specific meaning. See h vs Δ§ (h bar). Neither is right or wrong and they can be used interchangeably (when putting the 2*pi in or removing it at the same time). The same is true for dimensionless constants. E.g. 4*pi *(h bar) = 2 *(h). So the 4*pi as dimensionless constant is as correct as 2 or any other dimensionless number, as you can rescale other constants. If you redefine some natural constants, the value 137 also changes. Most dimensionless constants can be deduced from mathematics with a known or yet unknown underlying physical theory. For example all chemical properties of elements (=chemical constants) can be calculated from the underlying physics by very complex mathematical terms. For an excursion that also mathematical constants are open for debate, see the [[1292: Pi vs. Tau|Pi vs Tau]] debate. Both are correct. Sebastian --[[Special:Contributions/172.68.110.46|172.68.110.46]] 15:16, 18 January 2019 (UTC) |