White china, bright
Glazed china
Fibre
Fluoroplastic
Raw cotton different humidity
Unpolished chrome
Polished chrome
Polished chrome
Hromium-nickel
Cement
Zink:
oxidated
Cast iron :
- turned
- oxidated at heating
- rough, oxidated
Iron casting
Pig iron
Black shellac, bright on metal
Cinder
Plaster rough,
lime
Ebonite
N
22
N
25...30
N
20
N
25...30
N
38...538
N
50
N
500...1000
N
52...1035
N
25...30
N
30-260
N
30-200-530
N
830...990
N
200...600
N
40...250
N
50
N
1000
N
21
N
0...100
N
200...300
N
600...1200
N
1400...1800
N
10...90
N
N
0.70...0.75
0.92
0.93
0.95 0.02
0.93...0.96
0.08...0.26
0.08...0.10
0.28...0.38
0.64...0.76
0.93
0,02-0,06
0,28-0,14-0,11
0.60...0.70
0.64...0.78
0.95
0.81
0.95
0.82
0.97...0.93
0.89...0.78
0.76...0.70
0.69...0.67
0.91
0.89