ray15–17,21,22–4,30,32,35,53,54,55–6
bundle19–20,23
referencewave41–3
&ion17–19
&ion22–3,32,53
&iveindex23,24,32,33,36,47,48,50,53,55
&y84,89
&han117
ruler84
RutherfordAppleton
Laboratory106
S
&y43,113
Smith,Adam43
Snell,Willdebrord22–3,32,53
&ime83–4
&ral‘lines’58
&roscopy12,77,78–9,80,104
&rum8,9,12,58,90,102
speedoflight17,36,49,68,84,87,88–9
spontaneousemission73
standardquantumlimit110,115
Stanford,Leland80
starlight67
stimulatedemission45,72,75
stimulatedemissioion
microscopy45
stroboscope80,82,103
strontium91–2
Sun3,7,8,10,12,16
sunlight3,8,49,58,104
&ion44
syn47,71,79,107,123
radiation71,107
T
Tayle61