Physics

(physics) the maximum distance a vibrating material, sound wave, etc. such as a pendulum travels from its first position

In physics, amplitude refers to the maximum displacement of a wave from its equilibrium position.

(of a musical instrument) making a sound that is natural, not amplified

She preferred the acoustic guitar for its warm, natural tone.

a technology that uses sound waves to detect objects underwater or measure distances underwater

The submarine navigates using sonar to map the ocean floor and detect potential obstacles.

(geometry) a solid figure with flat sides and two parallel ends of the same size and shape

a type of electromagnetic radiation with shorter wavelengths than visible light, often associated with sunlight and used in various applications

Protect your skin from ultraviolet rays by wearing sunscreen.

relating to electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves, often used in night vision, heat detection, and remote control technology

Infrared cameras capture heat signatures that are invisible to the human eye.

the emission of light by a substance that has absorbed light or other electromagnetic radiation

Fluorescence is commonly seen in certain minerals that emit a glowing light under ultraviolet (UV) light.

a scientific instrument used to measure and analyze the properties of light over a specific range of wavelengths

The scientist used a spectrometer to analyze the composition of the unknown substance based on its light absorption.

a measure of how strongly a substance absorbs light at a particular wavelength

a fundamental particle of light that carries electromagnetic energy and exhibits both particle-like and wave-like properties

Photons are the quanta of electromagnetic radiation, including visible light, radio waves, and X-rays.

determine the refracting power of (a lens)

the bending, spreading, and interference of waves as they encounter obstacles or pass through narrow openings, often observed in the behavior of light, sound, or other waves

Diffraction of light produces patterns of alternating dark and bright regions when it encounters a narrow slit or passes through an obstacle.

a range of wavelengths of electromagnetic radiation absorbed by a substance, typically represented as a graph showing absorption intensity versus wavelength

Scientists use an absorption spectrum to identify chemical elements and compounds by analyzing the specific wavelengths of light they absorb.

the fraction or percentage of light or electromagnetic radiation that passes through a substance or medium

The transmittance of the glass allowed most of the sunlight to pass through into the room.

the branch of physical science that deals with the relationships between heat, work, and energy, particularly the principles governing the conversion of various forms of energy

The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed, only transferred or converted from one form to another.

an instrument that automatically controls the temperature of a room, machine, etc.

The thermostat regulates the temperature in the house, ensuring comfort and energy efficiency.

a device used to measure the heat released or absorbed during a chemical reaction or physical change, typically by measuring temperature changes in a surrounding medium

Chemists use a calorimeter to determine the heat of combustion of a substance by measuring the temperature change in water surrounding a reaction vessel.

a tool designed to measure the temperature of the surrounding air or environment

The meteorologist placed the thermometer in the shaded shelter to get an accurate air temperature reading.

a small piece of material that is a semiconductor, used to make an integrated circuit

The computer’s performance improved after upgrading its microchip.

the distance between a point on a wave of energy and a similar point on the next wave

In physics, wavelength is the distance between two consecutive peaks (or troughs) of a wave.

the concept that something has meaning or value only in comparison to something else

The relativity of happiness became clear, she valued health after illness.

(physics) matter consisting of elementary particles that are the antiparticles of those of regular matter

Antimatter is composed of antiparticles, which have the same mass as their corresponding particles but opposite electric charge.

the process of solidification or freezing, typically of a liquid or a substance turning into a solid state due to a decrease in temperature

The congelation of water into ice occurs when temperatures drop below freezing point.

relating to particles or forces that exist within atoms, including particles smaller than atoms themselves or the interactions between these particles

Subatomic particles interact through fundamental forces, such as electromagnetism and the strong and weak nuclear forces.

a very small, electrically neutral particle that rarely interacts with matter

Neutrinos are subatomic particles with very little mass.

extremely small, typically between 1 and 100 billionths of a meter, where materials show unique properties

The nanoscale structure of materials can change how they conduct electricity.

to transform from a liquid or flexible state into a stable, firm, or compact form

As the temperature dropped, the melted wax began to solidify, forming candles with a smooth surface.

to change from a solid state and become fluid or liquid

As the temperature rose, the snow on the ground started to liquefy.

the scientific study of measurement, including the development of measurement standards and techniques

Metrology laboratories test and certify measuring instruments.

a scientist who applies principles and methods of physics to study biological systems and phenomena, aiming to understand life processes at the molecular and cellular levels

The biophysicist used computational modeling to simulate protein folding dynamics in cells.

to spread across an area or through different channels

The aroma of freshly baked bread diffused through the kitchen.

used nuclear fuel that is no longer efficient for producing energy in a reactor

the rate at which pressure changes over a certain distance in a particular direction

the spatial frequency of a wave, representing the number of wavelengths per unit distance

The wave number of a light wave in vacuum is calculated as the inverse of its wavelength.

a tiny particle with whole-number spin, such as photons or the Higgs boson, often associated with carrying fundamental forces or giving mass to other particles

Photons, particles of light, are examples of bosons that carry the electromagnetic force.

a type of particle accelerator where two opposing beams of particles are directed to collide with each other at high speeds, allowing scientists to study fundamental particles and forces

The Large Hadron Collider (LHC) is the world's largest and most powerful collider, used to explore particle physics.

a pair of equal and opposite electric charges or magnetic poles separated by a small distance

a fundamental particle with half-integer spin, including electrons and their heavier counterparts, as well as neutrinos

Leptons are elementary particles that include electrons, muons, tau particles, and their associated neutrinos.