Wave-particle duality Key Terms

wave theory

A theory that describes light as a wave phenomenon, explaining behaviors such as interference and diffraction.

particle theory

A theory that describes light as being composed of particles called photons, which can explain phenomena like the photoelectric effect.

wave-particle duality

The concept that particles, such as photons and electrons, exhibit both wave-like and particle-like properties depending on the experimental context.

de Broglie wavelength

The wavelength associated with a particle, calculated using the formula λ = h / p, where h is Planck's constant and p is the momentum of the particle.

de Broglie wavelength

The wavelength associated with a moving particle, calculated using the formula λ = h / p, where h is Planck's constant and p is the momentum of the particle.

momentum

The product of the mass and velocity of an object, expressed as p = m x v, where p is momentum, m is mass, and v is velocity.

Diffraction

The bending of waves around obstacles and the spreading of waves when they pass through narrow openings.

Photoelectric Effect

The emission of electrons from a material when it absorbs light or electromagnetic radiation.

experimental context

The specific conditions and parameters under which an experiment is conducted, influencing the choice of model used to explain phenomena.

model choice

The selection of a theoretical framework or representation to explain observations, which is determined by the nature of the experimental context.

Electron Microscopy

A technique that uses electrons instead of light to form an image, allowing for higher resolution due to the shorter wavelength of electrons.

De Broglie Wavelength

The wavelength associated with a particle, which is inversely proportional to its momentum, allowing electrons to exhibit wave-like properties in microscopy.

de Broglie wavelength

The wavelength associated with a particle, calculated using the formula λ = h / p, where h is Planck's constant and p is the momentum of the particle.

resolution

The ability of an imaging system to distinguish between two closely spaced objects, which improves with shorter wavelengths in microscopy.

Electron Microscope

A type of microscope that uses a beam of electrons to create an image of the specimen, allowing for much higher resolution than optical microscopes.

Optical Microscope

A microscope that uses visible light and a system of lenses to magnify images of small samples, typically limited to a resolution of about 200 nanometers.

Electron Microscope Resolution

The smallest distance between two points that can be distinguished in an electron microscope, influenced by the wavelength of electrons.

De Broglie Wavelength

The wavelength associated with a particle, calculated using the formula λ = h / p, where h is Planck's constant and p is momentum.