Light and Electromagnetic Waves
Light is a part of this larger spectrum, which also includes radio waves, microwaves, and gamma rays.
What is the electromagnetic spectrum?
The speed of sound in a medium depends on this property, which is the mass per unit volume.
What is density?
This phenomenon occurs when light bounces off a surface, like a mirror.
What is reflection?
This technology uses ultrasound waves to create images of the inside of the human body.
What is medical imaging (ultrasound)?
This technology uses high-frequency sound waves to map the ocean floor and locate objects underwater.
What is sonar?
Light can travel through a vacuum because it is this type of wave.
What is a transverse wave?
A wave in which the medium vibrates parallel to the direction of wave travel, like sound, is known as this.
What is a longitudinal wave?
This law relates the angles of incidence and refraction for light passing between two media.
What is Snell's Law?
Polarized sunglasses work by blocking light waves that are polarized in this direction.
What is the horizontal direction?
This type of wave is used in optical fibers for high-speed internet and communication.
What are light waves?
This term describes the change in direction of light as it moves from one medium to another and its speed changes.
What is refraction?
When two waves of slightly different frequencies interfere, they produce this audible effect.
What are beats?
Total internal reflection occurs when light travels from a denser medium to a less dense medium and this condition is met.
What is the critical angle? ?
Sonar is a technique that uses sound waves to measure distances underwater. It stands for this.
What is Sound Navigation and Ranging?
The principle behind this medical technology, which uses high-energy X-rays or gamma rays, is based on the ability of these waves to penetrate body tissues for diagnostic and therapeutic purposes.
What is radiation therapy (or diagnostic radiology)?
The bending or spreading of waves as they pass through a small aperture or around an edge is known as this.
What is diffraction?
Standing waves can form on strings or in pipes when this type of interference occurs.
What is constructive interference?
The refractive index of a material determines how much light is bent. This equation describes the relationship between the angle of incidence and the refractive index.
What is Snell's Law (n₁sinθ₁ = n₂sinθ₂)?
Fiber optics rely on this optical principle to transmit light through long cables with minimal loss.
What is total internal reflection?
This phenomenon occurs when white light passes through a prism and splits into its component colors, showing the visible spectrum.
What is dispersion?
The plane defined by the direction of travel and the oscillating electric field in a light wave is referred to as this.
What is the plane of polarization?
The natural frequency at which a system vibrates when it is disturbed is known as this.
What is the resonant frequency?
This optical phenomenon explains why a straw looks bent when placed in a glass of water.
What is refraction?
Radio waves and microwaves are used in this type of communication technology, which includes Wi-Fi and mobile phones.
What is wireless communication?
In noise-cancelling headphones, this principle is used to reduce unwanted ambient sounds by producing sound waves that are out of phase with the incoming noise.
What is destructive interference?