Terms and Photometry

This note provides us an information about terms and Photometry.A source of light emits radiation of wide wavelength range. In photometry, we deal only with luminous energy, The amount of light energy incident on unit area of a surface per second is called intensity of illumination. Learn More

Lambert’s Cosine Law and Bunsen’s Photometer

This note provides us an information about lambert’s cosine law and Bunsen’s photometer . Lamberents law Learn More