Circuit symbols
Structures (natural or artificial)
Structures (tension, compresion, bending and torsion)
100
switch
100
Natural
100
Tension
200
light bulb
200
Natural
200
Torsion
300
battery
300
Artificial
300
Compresion
400
resistence
400
Articifial
400
Bending
500
LED
500
Natural
500
Torsion