Convert pound-force inch to Hartree energy
Please provide values below to convert pound-force inch [lbf*in] to Hartree energy [Eh], or Convert Hartree energy to pound-force inch.
How to Convert Pound-Force Inch to Hartree Energy
1 lbf*in = 2.5915448511453e+16 Eh
Example: convert 15 lbf*in to Eh:
15 lbf*in = 15 × 2.5915448511453e+16 Eh = 3.88731727671795e+17 Eh
Pound-Force Inch to Hartree Energy Conversion Table
| pound-force inch | Hartree energy |
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Pound-Force Inch
Pound-force inch (lbf·in) is a unit of torque representing the torque resulting from a one-pound-force applied at a perpendicular distance of one inch from the pivot point.
History/Origin
The pound-force inch has been used historically in engineering and mechanical contexts to quantify torque, especially in the United States, based on the imperial system of units. It originated from the need to measure rotational force in machinery and automotive applications.
Current Use
Today, pound-force inch is still used in engineering, automotive, and mechanical fields to specify torque values, particularly in the United States. It is often converted to SI units like newton-meters for international standardization.
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.