Principle diagram of a periscope
Schlüsselwörter
military,
telescope,
light rays,
reflect,
illustration,
observation,
figure,
element,
graphic,
experiment,
simple,
angle,
image,
prism,
obstacle,
black,
constructed,
periscope,
optical,
science,
light,
physical,
physics,
design,
vector,
tube,
vision,
plane,
ray,
instrument,
based,
object,
chart,
system,
eye,
diagram,
graph,
schematic,
degree
Deutsch
