Question

Difference between grating spectrum and normal spectrum

Answer 1

The colors of the spectrum produced by a diffraction grating are in reverse order to those of a prism. The order being colors observed as the angle in which these bands of light deviate from where the "straight through" white light would be. The angle of 'refraction' increases with wavelength, while the angle of light bands produced by 'diffraction' increases with decreasing wavelength

Answer 2

Explanation:

modern periodic table is based on the atomic number of elements,what was the experiment which proved the significance of atomic number from the following

1)mullikan's oil drop experiment

2)moseley's work on x-ray spectra

3)Bragg's work on X-ray diffraction

4)discovery of x-rays by rongten