ABSTRACT
In the Dictionary of Physics , central ideas and concepts are carefully introduced and explained. Each entry begins with a clear, one-sentence definition and is followed by an explanation and, where appropriate, by specific examples. The more important and more complex entries are supported by diagrams and by extra explanatory material. If relevant, the initial definition is followed by a word equation, a definition of the unit, and the symbols for the quantity and its unit. The aim of the Dictionary of Physics is to offer a focused account of the subject without leaving out any of the essential steps towards a new concept. Entries contain cross-references in italic to other entries; these further entries either support or extend the ideas of the original entry.
TABLE OF CONTENTS
letter 1|16 pages
A
entry |1 pages
Absolute Temperature Scale
entry |1 pages
Absolute Thermodynamic Temperature Scale
entry |1 pages
Absolute Zero
entry |1 pages
Absorption Coefficient
entry |3 pages
Acceleration
entry |3 pages
Acceleration of Free Fall
entry |1 pages
Activity
entry |1 pages
Addition Of Vectors
entry |2 pages
Adiabatic Changes
entry |1 pages
Airplanes
entry |2 pages
Algebraic Sum
entry |1 pages
Alloys
entry |1 pages
Alpha Decay
entry |1 pages
Alpha Particle
entry |2 pages
Alpha Particle Scattering Experiment
entry |1 pages
Stage 1
entry |1 pages
Stage 2
entry |1 pages
Stage 3
entry |2 pages
Alpha Radiation
entry |1 pages
Alternating Current And Voltage
entry |1 pages
Ammeters
entry |1 pages
Amorphous Solids
entry |2 pages
Ampere
entry |1 pages
Amplitude
entry |1 pages
Aneroid Barometer
entry |1 pages
Angle
entry |2 pages
Angular Acceleration
entry |1 pages
Angular Displacement
entry |1 pages
Angular Frequency
entry |1 pages
Angular Momentum
entry |2 pages
Angular Speed
entry |1 pages
Angular Velocity
entry |2 pages
Annealing
entry |1 pages
Apparent Depth
entry |2 pages
Archimedes' Principle
entry |2 pages
Atmospheric Pressure
entry |1 pages
Atomic Number
entry |1 pages
Atomic Theory Of Matter
entry |2 pages
Attenuation
entry |1 pages
Avogadro Constant
letter 2|8 pages
B
entry |1 pages
B-Field
entry |1 pages
Back E.M.F
entry |1 pages
Background Radiation
entry |1 pages
Banking
entry |1 pages
Bar
entry |1 pages
Barometer
entry |1 pages
Base Quantity
entry |2 pages
Base Unit
entry |1 pages
Beams
entry |1 pages
Becquerel
entry |2 pages
Bernouilli's Principle
entry |2 pages
Beta Decay
entry |1 pages
Beta Particle
entry |2 pages
Beta Radiation
entry |1 pages
Binding Energy Per Nucleon
entry |1 pages
Biofuels
entry |1 pages
Black Body Radiation
entry |2 pages
Boltzmann Constant
entry |1 pages
Bourdon Gage
entry |2 pages
Boyle's Law
entry |1 pages
Breaking Stress
entry |1 pages
Brittleness
entry |2 pages
Brownian Motion
letter 3|25 pages
C
entry |1 pages
Calibration
entry |1 pages
Capacitance
entry |3 pages
Capacitance (Measurement Of)
entry |2 pages
Capacitive Reactance
entry |2 pages
Capacitor
entry |1 pages
Capacitor Limitations
entry |1 pages
Capacitor Size
entry |2 pages
Capacitors In Ac Circuits
entry |2 pages
Capacitors In Parallel
entry |2 pages
Capacitors In Series
entry |1 pages
Capillary Action
entry |1 pages
Capillary Rise
entry |1 pages
Celsius
entry |2 pages
Celsius Temperature Scale
entry |1 pages
Center Of Gravity
entry |1 pages
Center Of Mass
entry |1 pages
Centigrade Temperature Scale
entry |2 pages
Centrifugal Force
entry |3 pages
Centripetal Force
entry |1 pages
Chain Reaction
entry |1 pages
Charge Carrier
entry |1 pages
Charge-Time Graph
entry |2 pages
Charge-To-Mass Ratio
entry |2 pages
Charles's Law
entry |2 pages
Circular Motion
entry |1 pages
Cleaving
entry |2 pages
Coherence
entry |1 pages
Collision
entry |1 pages
Composite Materials
entry |1 pages
Compressibility
entry |1 pages
Compressive Stress
entry |2 pages
Conductors And Insulators
entry |2 pages
Conical Pendulum
entry |1 pages
Conservation Of Linear Momentum
entry |1 pages
Constant Pressure Changes
entry |1 pages
Constant Volume Changes
entry |2 pages
Constant Volume Gas Thermometer
entry |1 pages
Control Rods
entry |1 pages
Convection
entry |1 pages
Coolant
entry |1 pages
Cooling
entry |1 pages
Cooling By Evaporation
entry |2 pages
Cooling By Working
entry |1 pages
Coulomb
entry |2 pages
Coulombmeter
entry |1 pages
Coulomb's Law
entry |1 pages
Count Rate
entry |2 pages
Couple
entry |1 pages
Covalent Bond
entry |1 pages
Creep
entry |1 pages
Critical Angle
entry |1 pages
Critical Temperature
entry |2 pages
Cross-Linking
entry |1 pages
Crystal Defects
entry |1 pages
Crystalline Solids
entry |1 pages
Curie Temperature
entry |3 pages
Current-Time Graph
letter 4|16 pages
D
entry |1 pages
Dalton's Law of Partial Pressures
entry |2 pages
Damped Harmonic Motion
entry |1 pages
Decay Constant
entry |1 pages
Decay Rate
entry |1 pages
Definition
entry |1 pages
Density
entry |2 pages
Derived Quantity
entry |1 pages
Derived Unit
entry |2 pages
Destructive Interference
entry |1 pages
Diamagnetic
entry |1 pages
Diffraction
entry |3 pages
Diffraction At A Single Slit
entry |3 pages
Diffraction Grating
entry |2 pages
Diffusion
entry |1 pages
Diode
entry |1 pages
Dispersion Of Light
entry |2 pages
Dispersion Of Sound
entry |4 pages
Displacement-Time Graph
entry |2 pages
Distance-Time Graph
entry |1 pages
Distance Traveled
entry |2 pages
Distribution Of Speeds
entry |2 pages
Domain Theory
entry |1 pages
Drag
entry |1 pages
Drift Speed
entry |1 pages
Ductility
letter 5|27 pages
E
entry |1 pages
Eddy Currents
entry |1 pages
Efficiency (Heat Engine)
entry |2 pages
Efficiency (Machines)
entry |1 pages
Efficiency (Thermal Power Station)
entry |1 pages
Einstein's Photoelectric Equation
entry |1 pages
Elastic Collision
entry |1 pages
Elastic Limit
entry |1 pages
Elastic Strain Energy
entry |1 pages
Elasticity
entry |1 pages
Electric Charge
entry |2 pages
Electric Charge And Electric Current
entry |1 pages
Electric Circuit
entry |2 pages
Electric Field
entry |2 pages
Electric Field Strength
entry |1 pages
Electric Motor
entry |3 pages
Electric Potential
entry |1 pages
Electrical Circuit Calculations
entry |1 pages
Electrical Power
entry |3 pages
Electromagnetic Induction
entry |1 pages
Electromagnetic Induction (Laws Of)
entry |3 pages
Electromagnetic Spectrum
entry |1 pages
Electromagnetic Waves
entry |1 pages
Electromotive Force
entry |1 pages
Electron
entry |3 pages
Electron Beams
entry |1 pages
Electron Diffraction
entry |1 pages
Electronic Charge
entry |1 pages
Electrostatics
entry |1 pages
E.m.f.
entry |1 pages
Energetics Of Stretching
entry |2 pages
Energy
entry |1 pages
Energy Level
entry |1 pages
Energy-Separation Curve
entry |2 pages
Energy Sources
entry |3 pages
Energy Stored In A Capacitor
entry |1 pages
Energy Transfer
entry |1 pages
Enthalpy
entry |1 pages
Equation
entry |4 pages
Equations Of Motion
entry |1 pages
Equilibrant
entry |1 pages
Error
entry |2 pages
Escape Speed
entry |1 pages
Evaporation And Cooling
entry |1 pages
Excitation
entry |1 pages
Experiments
entry |2 pages
Exponential Change
entry |3 pages
Exponential Decay
entry |3 pages
Exponential Law Of Radioactive Decay
entry |1 pages
Extranuclear Electrons
letter 6|11 pages
F
entry |1 pages
Farad
entry |1 pages
Faraday's Law
entry |1 pages
Fatigue
entry |1 pages
Ferromagnetism
entry |1 pages
Ferrous Core
entry |1 pages
Fick's Law
entry |1 pages
Field
entry |2 pages
Field Lines (Electric)
entry |1 pages
Field Lines (Magnetic)
entry |1 pages
Filament Lamp
entry |1 pages
Finite Energy Sources
entry |1 pages
Fissile Materials
entry |1 pages
Fission
entry |1 pages
Fixed Point
entry |1 pages
Fleming's Left Hand Rule
entry |1 pages
Fleming's Right Hand Rule
entry |1 pages
Flexibility
entry |1 pages
Flotation (Law Of)
entry |1 pages
Fluid Matter
entry |1 pages
Flux Linkage
entry |1 pages
Force
entry |1 pages
Force: A Localized Vector
entry |2 pages
Force-Extension Curves
entry |2 pages
Force-Separation Curve
entry |1 pages
Force On Current
entry |1 pages
Force On Moving Charge
entry |2 pages
Forced Oscillations
entry |1 pages
Forces In Equilibrium
entry |1 pages
Fossil Fuels
entry |1 pages
Fracture
entry |1 pages
Free-Body Force Diagram
entry |1 pages
Free Fall
entry |2 pages
Frequency
entry |1 pages
Friction
entry |1 pages
Fuel Rods
entry |1 pages
Full-Wave Bridge Rectifier
entry |2 pages
Fundamental Law Of Radioactive Decay
entry |1 pages
Fusion
letter 7|8 pages
G
entry |1 pages
Gage Pressure
entry |1 pages
Gamma Decay
entry |2 pages
Gamma Radiation
entry |1 pages
Gases
entry |1 pages
General Gas Equation
entry |2 pages
Generator
entry |1 pages
Geothermal Energy
entry |2 pages
Glass Fibers
entry |1 pages
Gradient
entry |1 pages
Graham's Law
entry |2 pages
Graph
entry |1 pages
Gravitation
entry |2 pages
Gravitational Constant G
entry |1 pages
Gravitational Field Strength
entry |2 pages
Gravitational Potential (Radial Fields)
entry |2 pages
Gravitational Potential (Uniform Fields)
letter 8|8 pages
H
entry |1 pages
Half-Life
entry |2 pages
Hall Effect
entry |1 pages
Hall Probe
entry |1 pages
Hardness
entry |1 pages
Heat
entry |1 pages
Heat Capacity
entry |2 pages
Heat Engine
entry |2 pages
Heat Pump
entry |1 pages
Heat Transfer
entry |1 pages
Heating
entry |1 pages
Heating And Working
entry |4 pages
Helical Spring
entry |1 pages
Henry (H)
entry |1 pages
High-Voltage Transmission
entry |2 pages
Homogeneity
entry |1 pages
Hooke's Law
entry |1 pages
Hydrogen Atom
entry |1 pages
Hysteresis
letter 9|9 pages
I
entry |1 pages
Ice Point
entry |2 pages
Ideal Gas Equation
entry |2 pages
Impulse
entry |1 pages
Induced E.M.F.
entry |1 pages
Inductance
entry |3 pages
Inductive Reactance
entry |1 pages
Inelastic Collision
entry |1 pages
Infrared Radiation
entry |1 pages
Insulators
entry |2 pages
Interference
entry |2 pages
Internal Resistance
entry |1 pages
International Practical Temperature Scale
entry |2 pages
Ionic Bond
entry |1 pages
Ionization
entry |1 pages
Ionizing Radiation
entry |1 pages
Ir
entry |2 pages
Isostasy
entry |1 pages
Isotope
letter 10|1 pages
J
entry |1 pages
Joule
letter 11|4 pages
K
entry |1 pages
Kelvin
entry |1 pages
Kepler's Laws
entry |1 pages
Kilowatt-Hour
entry |2 pages
Kinds Of Force
entry |1 pages
Kinetic Energy
entry |3 pages
Kinetic Theory Of Gases
entry |1 pages
Kirchhoff's First Law
entry |1 pages
Kirchhoff's Second Law
letter 12|3 pages
L
entry |1 pages
Laminar Flow
entry |1 pages
Length
entry |1 pages
Lenz's Law
entry |1 pages
Lift
entry |1 pages
Light As A Transverse Wave Motion
entry |1 pages
Light-Dependent Resistor (L.D.R.)
entry |1 pages
Light-Emitting Diodes (L.E.D.)
entry |1 pages
Light Rays
entry |1 pages
Limit Of Proportionality
entry |2 pages
Limiting Value
entry |1 pages
Linear Momentum
entry |1 pages
Lines Of Force
entry |1 pages
Lines Of Magnetic Force
entry |2 pages
Liquid Pressure (Laws Of)
entry |1 pages
Liquids
entry |1 pages
Localized Vector
entry |1 pages
Longitudinal Waves
entry |1 pages
Loudness
letter 13|12 pages
M
entry |1 pages
Machines
entry |1 pages
Magnet
entry |2 pages
Magnetic Effect Of Current
entry |1 pages
Magnetic Field Strength
entry |2 pages
Magnetic Flux
entry |1 pages
Magnetic Flux Density
entry |1 pages
Magnetic Flux Linkage
entry |1 pages
Malleability
entry |2 pages
Manometer
entry |1 pages
Mass
entry |1 pages
Mass-Energy Equivalence
entry |1 pages
Mass Excess
entry |1 pages
Mass Number
entry |1 pages
Mass On A String
entry |1 pages
Maxwell's Corkscrew Rule
entry |2 pages
Mean Power In Resistive Load
entry |2 pages
Mean Square Speed
entry |1 pages
Meniscus
entry |1 pages
Mercury Barometer
entry |2 pages
Mercury-In-Glass Thermometer
entry |1 pages
Metallic Bond
entry |2 pages
Metals
entry |1 pages
Meter
entry |1 pages
Microwaves
entry |2 pages
Millikan Oil Drop Experiment
entry |1 pages
Moderator
entry |2 pages
Molar Heat Capacities Of Gases
entry |1 pages
Molar Mass
entry |1 pages
Mole
entry |3 pages
Moment Of A Force
entry |1 pages
Moment Of Inertia
entry |1 pages
Motorboats
entry |1 pages
Motor Effect
entry |1 pages
Mutual Inductance
letter 14|7 pages
N
entry |1 pages
Neutral Point
entry |1 pages
Neutron
entry |1 pages
Neutron Number
entry |1 pages
Newton
entry |1 pages
Newton's Law Of Cooling
entry |2 pages
Newton's Law Of Gravitation
entry |2 pages
Newton's Laws Of Motion
entry |4 pages
Newton's Second Law Of Motion
entry |1 pages
Node
entry |1 pages
Nuclear Atom
entry |2 pages
Nuclear Reactions
entry |1 pages
Nuclear Reactor
entry |1 pages
Nuclear Transformation
entry |1 pages
Nucleon
entry |1 pages
Nucleus
entry |1 pages
Nuclide
entry |1 pages
N-Z Curve For Stable Nuclei
letter 15|2 pages
O
entry |1 pages
Object Position
entry |1 pages
Ohm
entry |1 pages
Ohmic Conductors
entry |1 pages
Ohm's Law
entry |2 pages
Oil Film Experiment
entry |1 pages
Optical Fiber
entry |1 pages
Ordered And Disordered Energy
letter 16|18 pages
P
entry |1 pages
Parallax Error
entry |1 pages
Parallelogram Law
entry |3 pages
Parallel Plate Capacitor
entry |1 pages
Paramagnetic Substances
entry |1 pages
Path Difference
entry |1 pages
Penetrating Power
entry |2 pages
Period
entry |1 pages
Permittivity Of Free Space
entry |1 pages
Phase
entry |1 pages
Phase Difference
entry |4 pages
Photoelectric Effect
entry |1 pages
Photovoltaic Cells
entry |1 pages
Physical Quantity
entry |1 pages
Pitch
entry |2 pages
Plane Mirrors
entry |1 pages
Plastic Deformation
entry |1 pages
Plasticity
entry |1 pages
Poisseuille's Equation
entry |2 pages
Polarization By Reflection
entry |2 pages
Polarization Phenomena
entry |1 pages
Polaroid
entry |2 pages
Polycrystalline Solids
entry |1 pages
Position
entry |1 pages
Positron
entry |1 pages
Potential (Electric)
entry |1 pages
Potential (Gravitational)
entry |2 pages
Potential Difference (Electrical)
entry |1 pages
Potential Divider
entry |2 pages
Potential Energy
entry |1 pages
Power
entry |2 pages
Precision
entry |1 pages
Prefixes Used With Si Units
entry |1 pages
Pressure
entry |1 pages
Pressure Gage
entry |2 pages
Pressure In Bubbles
entry |2 pages
Pressure Law (1802)
entry |1 pages
Primary Fuels
entry |1 pages
Principle Of Moments
entry |1 pages
Principle Of Superposition
entry |1 pages
Progressive And Stationary Waves
entry |1 pages
Progressive Waves
entry |2 pages
Projectiles
entry |1 pages
Proton
entry |1 pages
Proton Number, Z
entry |2 pages
Pseudovector Quantities
letter 17|1 pages
Q
entry |1 pages
Quantity Algebra
entry |1 pages
Quantization Of Charge
entry |1 pages
Quenching
letter 18|17 pages
R
entry |1 pages
Radial Electric Field
entry |2 pages
Radial Magnetic Field
entry |1 pages
Radiation
entry |1 pages
Radiation Loss
entry |1 pages
Radio Waves
entry |1 pages
Radioactive Decay
entry |1 pages
Random Error
entry |1 pages
Random Motion
entry |2 pages
Randomness And Radioactive Decay
entry |1 pages
Rate Of Change
entry |1 pages
Rate Of Cooling
entry |1 pages
Ray Diagram
entry |1 pages
Ray Optics
entry |1 pages
Reactance
entry |3 pages
Rectification, Half-Wave And Full-Wave
entry |1 pages
Reflection Of Light
entry |1 pages
Refraction (Laws Of)
entry |2 pages
Refraction Of Light
entry |2 pages
Refractive Index
entry |1 pages
Refrigerator
entry |2 pages
Reinforced Concrete
entry |1 pages
Relative Molar Mass
entry |1 pages
Relative Permeability
entry |1 pages
Relative Permittivity
entry |1 pages
Renewable Energy Sources
entry |1 pages
Resilience
entry |2 pages
Resistance
entry |1 pages
Resistance Thermometer
entry |4 pages
Resistivity
entry |1 pages
Resolution Of Vectors
entry |2 pages
Resonance
entry |2 pages
Resonance In Ac Circuits
entry |1 pages
Resonance With Sound Waves
entry |1 pages
Resultant
entry |2 pages
Reynold's Number
entry |1 pages
Rigid Bodies
entry |1 pages
Rigidity
entry |1 pages
Ring
entry |2 pages
Ripple Tank
entry |1 pages
r.m.s. (Root Mean Square)
entry |2 pages
Rolling
entry |1 pages
Root Mean Square Speed
entry |1 pages
Rotational Energy
entry |1 pages
Rotational Motion
entry |1 pages
Rubber
letter 19|28 pages
S
entry |1 pages
Sailboats
entry |2 pages
Satellite
entry |1 pages
Scalar Quantity
entry |1 pages
Second
entry |1 pages
Secondary Fuels
entry |2 pages
Self-Inductance
entry |2 pages
Semiconductor
entry |2 pages
Semiconductor Diodes
entry |2 pages
Series Resistance And Capacitance
entry |2 pages
Series Resistance And Inductance
entry |1 pages
S.h.m.
entry |1 pages
Si
entry |3 pages
Simple Harmonic Motion
entry |2 pages
Simple Pendulum
entry |1 pages
Sizes Of Atoms
entry |1 pages
Slip
entry |1 pages
Smoothing Capacitor
entry |1 pages
Snell's Law
entry |2 pages
Solar Constant
entry |1 pages
Solar Power
entry |2 pages
Solenoid
entry |1 pages
Solids
entry |1 pages
Sound
entry |2 pages
Sound Waves
entry |3 pages
Specific Heat Capacity
entry |2 pages
Specific Heat Capacity (Measurement Of)
entry |1 pages
Specific Latent Heat
entry |3 pages
Speed
entry |2 pages
Speed Measurement
entry |1 pages
Speed Of Light
entry |2 pages
Speed Of Sound
entry |1 pages
Speed-Time Graph
entry |1 pages
Standard Pressure
entry |2 pages
Standard Temperature And Pressure (S.T.P.)
entry |1 pages
States Of Matter
entry |2 pages
Stationary Waves
entry |1 pages
Steady State
entry |2 pages
Steam Point
entry |1 pages
Stiffness
entry |1 pages
Stokes's Law
entry |1 pages
Straight Line Motion
entry |2 pages
Straight Wire
entry |1 pages
Strain
entry |1 pages
Streamline Flow
entry |1 pages
Strength
entry |1 pages
Stress
entry |3 pages
Stress–Strain Curves
entry |2 pages
Subtraction Of Vectors
entry |1 pages
Superconductors
entry |1 pages
Superposition
entry |2 pages
Surface Tension
entry |1 pages
Symbol
entry |1 pages
Systematic Error
letter 20|15 pages
T
entry |1 pages
Temperature
entry |1 pages
Temperature Coefficient Of Resistance
entry |1 pages
Temperature Gradient
entry |1 pages
Tempering
entry |2 pages
Terminal Speed
entry |1 pages
Tesla
entry |2 pages
Thermal Conduction
entry |1 pages
Thermal Conductivity
entry |2 pages
Thermal Energy
entry |1 pages
Thermal Equilibrium
entry |2 pages
Thermal Fission Reactor (Nuclear Reactor)
entry |1 pages
Thermal Power
entry |1 pages
Thermal Power Station
entry |2 pages
Thermionic Emission
entry |1 pages
Thermistors
entry |2 pages
Thermocouple
entry |1 pages
Thermodynamics (First Law Of)
entry |2 pages
Thermoplastic Polymers
entry |1 pages
Threshold Frequency
entry |1 pages
Thrust
entry |1 pages
Time
entry |1 pages
Time Constant
entry |1 pages
Time Interval
entry |2 pages
Torque
entry |2 pages
Total Internal Reflection
entry |2 pages
Total Radiation Curve
entry |1 pages
Toughness
entry |1 pages
Tracer Elements
entry |2 pages
Transformer
entry |1 pages
Translational Motion
entry |1 pages
Transverse Waves
entry |2 pages
Triangle Of Forces
entry |1 pages
Turbulent Flow
entry |1 pages
Turning
entry |1 pages
Two-Dimensional Motion
entry |3 pages
Two-Slits Experiment
letter 21|3 pages
U
entry |1 pages
Ultimate Tensile Stress
entry |1 pages
Ultraviolet Light
entry |1 pages
Uncertainty
entry |1 pages
Unified Atomic Mass Constant
entry |2 pages
Uniform Electric Field
entry |1 pages
Unit
entry |1 pages
Upthrust
entry |2 pages
U Value
entry |1 pages
Uv
letter 22|5 pages
V
entry |1 pages
Van Der Waals' Bond
entry |1 pages
Vector Quantity
entry |2 pages
Velocity
entry |2 pages
Velocity-Time Graph
entry |1 pages
Viscoelasticity
entry |2 pages
Viscosity
entry |2 pages
Visible Spectrum
entry |1 pages
Voltage-Current Characteristics
entry |1 pages
Voltmeters
entry |1 pages
Vulcanized Rubber
letter 23|6 pages
W
entry |1 pages
Water Waves
entry |1 pages
Watt
entry |1 pages
Wave Behavior
entry |1 pages
Wavefront
entry |1 pages
Wavelength
entry |2 pages
Wave Nature Of Light
entry |1 pages
Wave-Particle Duality
entry |1 pages
Wave Speed
entry |2 pages
Waves In Pipes
entry |1 pages
Waves On Strings
entry |1 pages
Weight
entry |1 pages
Weightlessness
entry |2 pages
Wien's Law
entry |1 pages
Word Equation
entry |3 pages
Work
entry |1 pages
Work Done In Compression
entry |1 pages
Work Function Energy
entry |1 pages
Work Hardening
letter 24|3 pages
X
entry |3 pages
X-Rays
letter 25|1 pages
Y
entry |1 pages
Yield Point
entry |1 pages
Young's Modulus
entry |1 pages
Young's Two-Slits Experiment
letter 26|1 pages
Z
entry |1 pages
Zero Error
entry |1 pages
Zeroth Law Of Thermodynamics
