The Double Slit Experiment and Electromagnetic Wave Theory Quiz

Light Properties

• Violet color has the shortest wavelength and highest frequency.
• Black color is reflected when all other colors are absorbed.

Light Dispersion

• The process of separating light into its band of colors is called dispersion.
• Prisms are commonly used to disperse sunlight to create a solar spectrum.

Light Theories

• The corpuscular or particle theory of light describes light as a stream of particles.
• The wave theory of light describes light as a train of waves.
• Christiaan Huygens proposed the wave theory of light.
• James Clerk Maxwell confirmed the electromagnetic wave theory of light.
• Heinrich Hertz confirmed that light and other electrically generated waves are electromagnetic waves.

Light Phenomena

• The Photoelectric Effect is related to the energy of light.
• The Double Slit Experiment by Thomas Young focuses on the wave nature of light.
• According to Quantum Theory, light energy is radiated in discrete packets called photons.

Light Characteristics

• Light has dual characteristics of wave and particle based on scientific investigations.

Light Measurement

• The SI unit for illuminance is lux (lx).
• The science of measuring light based on its perceived brightness to the human eye is called photometry.

Light Sources

• Artificial sources of light include electric lamps and LEDs.

Light and Matter

• A red rose appears red to our eyes because it reflects red light and absorbs other colors.
• Transparent materials readily transmit light.