Convert kilocalorie (IT) to Hartree energy
Please provide values below to convert kilocalorie (IT) [kcal (IT)] to Hartree energy [Eh], or Convert Hartree energy to kilocalorie (IT).
How to Convert Kilocalorie (It) to Hartree Energy
1 kcal (IT) = 9.60330690657777e+20 Eh
Example: convert 15 kcal (IT) to Eh:
15 kcal (IT) = 15 × 9.60330690657777e+20 Eh = 1.44049603598667e+22 Eh
Kilocalorie (It) to Hartree Energy Conversion Table
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Kilocalorie (It)
A kilocalorie (kcal) is a unit of energy equal to 1,000 calories, commonly used to measure the energy content of food and beverages.
History/Origin
The kilocalorie originated in the 19th century as a measure of heat energy, primarily used in nutrition and thermodynamics. It became standard in dietary contexts to quantify food energy intake.
Current Use
Today, the kilocalorie is widely used in nutrition to express the energy content of foods and beverages, and in scientific contexts related to energy measurement in biological and physical systems.
Hartree Energy
The Hartree energy (Eh) is a unit of energy used in atomic physics, representing the total energy of an electron in a hydrogen atom in its ground state.
History/Origin
Named after the American physicist Douglas Hartree, the Hartree energy was introduced in the early 20th century as a fundamental atomic unit of energy within the system of atomic units, facilitating calculations in quantum mechanics.
Current Use
The Hartree energy is primarily used in theoretical and computational chemistry and physics to express energies at the atomic and molecular scale, especially in quantum chemistry calculations and atomic physics research.