ncal(nanocalorie)

A nanocalorie (ncal) is a unit of energy in the field of energy measurements. It is a submultiple of the calorie, which is a unit commonly used to quantify energy, particularly in the context of food, nutrition, and heat transfer. The prefix "nano" denotes that it is one-billionth (10⁻⁹) of a calorie. Therefore, one nanocalorie is equivalent to 0.000000001 (10⁻⁹) calories. In the International System of Units (SI), the energy is usually measured in joules; thus, 1 nanocalorie is approximately equal to 4.184 picojoules (pJ). Nanocalories are generally used when dealing with very small amounts of energies, such as in microscopic or nano-level energy exchanges.

deV(decielectron volt)

A decielectron volt (deV) is a unit of energy used in various fields, such as nuclear, atomic, or particle physics, to represent the energy of particles or processes occurring at atomic scales. It is derived from the electron volt (eV), which is defined as the amount of kinetic energy gained or lost by an electron when it is accelerated through an electric potential difference of one volt.

A decielectron volt is equal to one-tenth (0.1) of an electron volt, so 1 deV = 0.1 eV. Electron volts and their subunits like decielectron volts are convenient units for representing small energies, such as those encountered in atomic and subatomic processes.

To put it into perspective, the energy scale of decielectron volts is quite small compared to everyday energies. One electron volt (eV) is equal to approximately 1.602 × 10^-19 joules, and hence, one decielectron volt (deV) is equal to about 1.602 × 10^-20 joules. Since the joule is the SI unit of energy, eV and deV are more suited for small-scale energy exchanges in atomic and subatomic levels.