Convert Centielectron volt to Femtoelectron volt

A Centielectron volt (ceV) is a unit of energy used in physics, particularly in areas like particle physics and quantum mechanics. To understand what a centielectron volt is, let's break it down into simpler concepts:

• An electron volt (eV) is a small unit of energy, defined as the energy gained (or lost) by an electron when it is accelerated through an electric potential difference of one volt.
• Numerically, 1 electron volt is equivalent to approximately $1.6 \times 10^{-19}$ joules. It's a very small amount of energy, suitable for describing the energy levels of particles like electrons or photons.

• The prefix centi- means one-hundredth ($\frac{1}{100}$) of something. You may be familiar with this prefix from other measurements like a centimeter, which is one-hundredth of a meter.

• Therefore, a centielectron volt (ceV) is equal to one-hundredth of an electron volt.
• Numerically, $1 \text{ ceV} = 0.01 \text{ eV}$.
• This unit is used to express extremely small amounts of energy, especially in contexts where even a single electron volt is too large for precise measurements.

• If a particle has an energy of 0.25 eV, this can also be expressed as 25 ceV. Using ceV allows for a finer representation of small energy values.

In summary, a centielectron volt is one-hundredth of an electron volt. It's a tiny unit of energy used in physics to measure very small amounts of energy, particularly in fields dealing with particles and quantum phenomena.

A Femtoelectron volt (feV) is an extremely small unit of energy used in physics, particularly in highly specialized areas like quantum mechanics, particle physics, and nanotechnology. To understand what a femtoelectron volt is, let’s break it down:

• An electron volt (eV) is a unit of energy that represents the amount of energy an electron gains (or loses) when it is accelerated through an electric potential difference of one volt.
• Numerically, 1 electron volt is equal to approximately $1.6 \times 10^{-19}$ joules. This unit is very small and is typically used to measure the energy levels of tiny particles like electrons and photons.

• The prefix femto- means one-quadrillionth ($\frac{1}{1,000,000,000,000,000}$) of something. This prefix is used in units that deal with extremely tiny quantities, such as a femtosecond, which is one-quadrillionth of a second.

• Therefore, a femtoelectron volt (feV) is equal to one-quadrillionth of an electron volt.
• Numerically, $1 \text{ feV} = 0.000000000000001 \text{ eV} = 10^{-15} \text{ eV}$.
• This unit is used to describe incredibly small amounts of energy, typically in contexts where even a picoelectron volt (one-trillionth of an electron volt) is too large.

• In cutting-edge quantum experiments or in the study of subatomic particles, energy levels can be so tiny that they are best expressed in femtoelectron volts. For example, if a certain interaction involves an energy of $10^{-12}$ eV, it could be expressed as 1,000 feV.

In summary, a femtoelectron volt is one-quadrillionth of an electron volt. It is an extremely small unit of energy used in physics to measure minute energy levels in systems where incredibly high precision is required, such as in advanced quantum mechanics and particle physics.