Trends Flashcards
1
Q
When did who make foundation of the laser
A
1917 and einstein
2
Q
When was the first laser developed
A
1960
3
Q
What determine the chemical behaviour of a atom
A
Number and arrangement of electrons
4
Q
When was the spectroscope invented
A
1859
5
Q
What quarks make a proton
A
Two up and one down
6
Q
Charge of up, charm and top quark
A
+2/3e
7
Q
Charge of down, strange and bottom quark
A
-1/3e
8
Q
Who found evidence of quarks
A
Taylor
9
Q
Most massive quark
A
Top
10
Q
Who observed uraniums radioactivity
A
Bacquerel
11
Q
Least massive quark
A
Up
12
Q
Stable quarks
A
Up and down
13
Q
Quark in D mesons
A
Charm
14
Q
Quark in b mesons
A
Bottom
15
Q
A
