Error symbol physics

1. What is the error symbol in physics?
2. What is E in physics?
3. What does ∆ mean in physics?

What is the error symbol in physics?

ε: “Error term” in regression/statistics; more generally used to denote an arbitrarily small, positive number. ∈ (Variant Epsilon) This version of epsilon is used in set theory to mean “belongs to” or “is in the set of”: x ∈ X; similarly used to indicate the range of a parameter: x ∈ [0, 1].

What is E in physics?

electron charge, (symbol e), fundamental physical constant expressing the naturally occurring unit of electric charge, equal to 1.602176634 × 10⁻¹⁹ coulomb.

What does ∆ mean in physics?

Delta in physics: The Greek capital letter delta would be the traditional mathematical sign for representing a change as well as variation in some kind of quantity or object.