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.

dt [TNT](decitonne)

In the field of energy, a unit of measurement called TNT or decitonne (dt) represents the energy equivalent of 100 kilograms (0.1 metric ton) of trinitrotoluene (TNT), an explosive material. This unit is often used to describe the yield, efficiency, or destructiveness of an explosion, particularly in the context of military or nuclear explosions. The energy released by an explosion, measured in TNT or decitonnes, helps put the amount of energy released in such events into a more relatable or manageable context. One decitonne (dt) of TNT is roughly 1 billion joules (1 gigajoule or 1 GJ), which is the approximate energy required to drive an average car for more than 600 kilometers (372 miles).