(a) θ_i = 20.3˚, θ_r = 85.4˚, Φ = 43.6˚

Wavelength/nm

Experimental value/sr⁻¹

Predicted value/sr⁻¹

Error/%

1024

0.719129

0.692097434

3.76%

1124

0.683017

0.642952323

5.87%

1224

0.637972

0.661506272

3.69%

1324

0.526909

0.505321971

4.10%

1424

0.361483

0.320295342

11.39%

1524

0.413654

0.373237722

9.77%

1624

0.385385

0.340028096

11.77%

(b) θ_i = 17.9˚, θ_r = 85.5˚, Φ = 40.8˚

1024

0.662113

0.719186524

8.62%

1124

0.574294

0.561432584

2.24%

1224

0.45858

0.401245358

12.50%

1324

0.37704

0.343482743

8.90%

1424

0.297907

0.272620044

8.49%

1524

0.266751

0.23262322

12.79%

1624

0.253066

0.224206016

11.40%

(c) θ_i = 21.4˚, θ_r = 83.8˚, Φ = 48.9˚

1024

0.719129

0.652754839

9.23%

1124

0.683017

0.627267503

8.16%

1224

0.637972

0.573103103

10.17%

1324

0.526909

0.571239607

8.41%

1424

0.361483

0.399360907

10.48%

1524

0.413654

0.442053351

6.87%

1624

0.385385

0.335484195

12.95%