05-24-2019, 09:09 PM
Gell-Mann established theoretically that protons and neutrons are not fundamental particles.
The proton:
![[Image: 220px-Quark_structure_proton.svg.png]](https://upload.wikimedia.org/wikipedia/commons/thumb/9/92/Quark_structure_proton.svg/220px-Quark_structure_proton.svg.png)
Two ups and one down
https://en.wikipedia.org/wiki/Proton
The neutron:
![[Image: 250px-Quark_structure_neutron.svg.png]](https://upload.wikimedia.org/wikipedia/commons/thumb/8/81/Quark_structure_neutron.svg/250px-Quark_structure_neutron.svg.png)
Two downs and an up.
https://en.wikipedia.org/wiki/Neutron
Mnemonic for memorization of the distinction:
A professional must double up with the learning in his field, lest he go doubly down and neuter his chance for success.
The 'up' quark has a charge is +2/3, and the 'down' quark has a charge of -1/3.
Unless someone else came up with a better mnemonic, please give me the credit.
The proton:
Two ups and one down
https://en.wikipedia.org/wiki/Proton
The neutron:
Two downs and an up.
https://en.wikipedia.org/wiki/Neutron
Mnemonic for memorization of the distinction:
A professional must double up with the learning in his field, lest he go doubly down and neuter his chance for success.
The 'up' quark has a charge is +2/3, and the 'down' quark has a charge of -1/3.
Unless someone else came up with a better mnemonic, please give me the credit.
The ideal subject of totalitarian rule is not the convinced Nazi or the dedicated Communist but instead the people for whom the distinction between fact and fiction, true and false, no longer exists -- Hannah Arendt.