Observation

• -     Reflection.
• Absorption.
• Transmission.
• Refraction.
• Dispersion/scattering/polarization.
• Interference.
• Diffraction.
• Travels in a straight line.

(b)-    Light enables photography to exist.

• Light is recorded/captured as images on film or through the sensor of a digital camera/light is needed for image formation (creation)
• Light determines mood in photography especially in black and white.
• Light is used to transfer image from a negative unto a photo paper.
• Light determines the quality of photographic image.
• Light illuminates the subject (object)/helps photographer see what to take.
• Light is used for aesthetic effect.

• A man-made light created to provide illumination in photography/light used in the absence of natural light in photography.
• It can be used for indoor or outdoor picture taking.
• Artificial lights can be easily controlled.
• Examples of artificial light include flash, streetlight, florescent, tungsten, LED halogen, oil lamp and candle light.