The key difference between density and vapour density is that the term density measures the mass per unit volume of any substance that can be a solid, liquid or a gas whereas the term vapour density refers to the density of vapour of a substance in relation to the density of the vapour of hydrogen. […]
Difference Between Heat Flow and Heat Flux
The key difference between heat flow and heat flux is that heat flow refers to the exchange of thermal energy between physical systems, whereas heat flux refers to energy flow between physical systems per unit of area per unit of time. The terms heat flow and heat flux are important concepts in physical chemistry regarding […]
Difference Between Electron Affinity and Electron Gain Enthalpy
The key difference between electron affinity and electron gain enthalpy is that electron affinity refers to the tendency of an isolated atom to obtain an electron, whereas electron gain enthalpy is the energy released when an isolated neutral atom gains one extra electron. Electron affinity and electron gain enthalpy are two related terms because electron […]
Difference Between R Value and U Value
The key difference between R value and U value is that higher the R value better the insulation, whereas lower the U value better the insulation for a particular material. R value and U value are important factors regarding the insulation ability of different materials. These values indicate the thermal performance of a barrier structure. […]
Difference Between Geocentric and Heliocentric Models
The key difference between geocentric and heliocentric models is that according to the geocentric model, the Earth is at the centre of the cosmos or Universe whereas according to the heliocentric model, the Sun is the centre and planets revolve around the Sun. Geocentric and heliocentric models are very important in astrophysics. These models are […]
Difference Between Newton’s First Law and Inertia
The key difference between Newton’s first law and inertia is that Newton’s first law describes the relationship between the motion of an object and the forces that are acting upon the object whereas the term inertia refers to the resistance of an object to any change in its velocity. Generally, Newton’s first law of motion […]
Difference Between Kepler and Newton Law
The key difference between Kepler and Newton law is that Kepler law describes the planetary motion around the Sun whereas Newton laws describe the motion of an object and its relationship with the force that is acting on it. Kepler’s law and Newton’s laws are very important in physical chemistry regarding the motion of objects. […]
Difference Between Ising and Heisenberg Model
The key difference between Ising and Heisenberg model is that in the Ising model, the energy of a configuration of spins is invariant under flipping every spin in the system from to or vice versa, whereas in the Heisenberg model, the energy of a configuration of spins is invariant to applying the same rotation around […]
Difference Between Dielectric Constant and Dielectric Strength
The key difference between dielectric constant and dielectric strength is that dielectric constant is the ratio between the capacitance of an insulating material and the capacitance of vacuum whereas dielectric strength is the electrical strength of an insulating material. Dielectric constant is a ratio and has no units of measurement while dielectric strength has the […]
Difference Between Temporary and Permanent Hardness of Water
The key difference between temporary and permanent hardness of water is that temporary hardness of water can be removed by boiling the water, whereas permanent hardness cannot be removed by boiling. We can define water hardness as the measurement of the concentration of total divalent ions present in water. Examples of some divalent ions present […]
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