Strange Quark
4 × 10-19 m
Strange quarks are very strange. They are 50 times as massive as up quarks, but are still smaller! Isn't that strange? Very much so! "Strange matter" is made up of up, down, and strange quarks!

4 × 10-19 m
Strange quarks are very strange. They are 50 times as massive as up quarks, but are still smaller! Isn't that strange? Very much so! "Strange matter" is made up of up, down, and strange quarks!
