Physics: English Vocabulary List

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

"The amplitude of the sound wave determines how loud the noise is."

"Amplitude is the maximum extent of a wave's displacement from its equilibrium position"

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

"The submarine used sonar to detect objects"

"The submarine used sonar to detect other vessels by sending sound pulses and listening for their echoes."

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

"The fluorescence is bright."

"Fluorescence is used in many modern lighting technologies."

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

"The spectrometer analyzes light."

"The scientist used a spectrometer to analyze the light from the distant star and determine which elements it contained."

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

"High molar absorptivity."

"The chemist calculated the molar absorptivity of the blue dye to determine how much light a specific concentration would absorb."

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

"A photon is a light particle."

"The photoelectric effect demonstrates that light can behave as discrete packets of energy called photons."

(of physics) to change the direction of light, sound, or energy when it passes through something

"Water refracts light beams."

"The glass prism can refract a beam of white light into all the colors of the rainbow."

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 bends light waves around corners."

"Diffraction is the spreading of waves around obstacles"

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

"The absorption spectrum."

"Each element has a unique absorption spectrum."

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

"The transmittance is high."

"The optical transmittance of the new lens material was significantly improved for better image clarity."

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

"Thermodynamics studies heat and energy."

"The second law of thermodynamics states that the total entropy of an isolated system can only increase over time"

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

"The thermostat is set low."

"He adjusted the thermostat to seventy degrees because the house felt too cold during the winter night."

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

"Use the calorimeter."

"The student used a calorimeter to measure how much heat was produced when burning a small piece of cheese."

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

"A tiny microchip contains the entire computer processor."

"A microchip implant is a small identifying integrated circuit placed under the skin of an animal; it is passive"

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

"Long wavelength means spread out."

"Different colors of light have distinct wavelengths, which our eyes perceive as varying hues."

a theory that explains the relationship between motion, space, and time

"Einstein's theory of relativity."

"The theory of relativity revolutionized our understanding of gravity, space, and the fundamental nature of the universe."

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

"Antimatter is rare."

"Antimatter annihilates when it contacts normal matter."

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

"Extreme cold caused rapid water congelation"

"The congelation of the lake surface during the cold winter allowed people to ice skate safely on the thick frozen layer."

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

"The particle is subatomic."

"The subatomic particles are too small to be seen with ordinary microscopes and scientists use special equipment to study their behavior."

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

"The neutrino is tiny."

"Neutrinos are extremely light particles that rarely interact with matter."

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

"The device is nanoscale."

"Nanoscale particles can target cancer cells without damaging healthy tissue around them effectively."

to change from a solid state and become fluid or liquid

"The heat will liquefy the wax."

"The intense heat from the sun will liquefy the wax and cause it to melt completely."

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

"Metrology ensures accuracy."

"The factory's quality control department relies on metrology to ensure every part is manufactured to precise specifications."

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

"She is a biophysicist."

"The biophysicist used lasers to study how individual proteins fold into their complex three dimensional structures inside living cells."

describing light that spreads evenly from a broad source or surface, creating soft illumination without harsh shadows

"The light is diffuse."

"The diffuse light from the cloudy sky made the room feel soft and peaceful and she did not need to turn on any lamps."

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

"Spent fuel storage."

"The nuclear power plant stored its spent fuel in deep pools of water to cool it down before final disposal."

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

"Strong pressure gradient."

"The strong wind was caused by a steep pressure gradient between the high pressure system over the ocean and the low pressure inland."

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

"The wave number."

"The chemist calculated the wave number of the infrared absorption peak to identify the specific chemical bond present in the unknown compound."

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 are examples of bosons."

"A boson is a force-carrying particle that obeys Bose-Einstein statistics"

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 collider helped physicists study tiny particles"

"The Large Hadron Collider is the world's largest particle collider."

a simple type of antenna made of two metal rods, connected in the middle, that is half the wavelength of the signal it transmits or receives

"The antenna is a dipole."

"A simple dipole antenna is often used for receiving radio signals at specific frequencies."

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

"Electrons are a type of lepton."

"A lepton is a fundamental particle with half-integer spin, including electrons and their heavier counterparts."

relating to the science of studying sounds or the way people hear things

"The acoustic was good."

"The hall's excellent acoustic properties made it ideal for classical music performances."

a solid geometric shape, typically with a triangular base and rectangular sides, that refracts light into its component colors or alters the path of light

"The prism showed colors."

"When light passes through a prism, it separates into its constituent colors due to refraction."

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

"Ultraviolet rays can damage human skin"

"Ultraviolet light can damage skin and cause cancer."

electromagnetic radiation with longer wavelengths than visible light, used for applications such as thermal imaging and remote sensing

"Infrared cameras can see heat."

"The snake can see infrared radiation which allows it to hunt warm blooded prey even in complete darkness without any light."

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

"The thermometer is broken."

"He used a digital thermometer to accurately measure the patient's body temperature."

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

"The liquid will solidify when cooled."

"The mixture will solidify as it cools so you must pour it into the mold while it is still hot."