What does the triangle sign means in a physics equation?

Question

What does the triangle sign means in a physics equation?

Answer 1

Delta, which means change.

Answer 2

The triangle represents the Greek letter Delta which means "change."

For example, the acceleration formula is given by:

A = delta distance / delta time (substitute the triangle for the word delta).

So translated, the equation says:

Acceleration is equal to the change in distance divided by the change in time.  

Answer 3

that triangle represents change in anything... which is remarkable..

like V2 and V1... the difference between both of them when V2 > V1

so, V2-V1 = DELL (that triangle sign) V...

that is also used in mathematins in differentiation.. thats why we write dx/dt which mean change in the variable X with respect to the change in time...  

you dont have to be confused... both the things are same...

in short... that triangle only represents the difference...

Answer 4

Yeah it means delta, or change  for example Delta T, means change in temperature or Delta P means change in pressure.

Answer 5

change, for example velocity, change in distance/change in time = velocity

Look up in a calculus book the concept of a derivative, it will be explained in better detail.

Answer 6

if it its presented in dot form, it means therefore

  .

.  .  like this

Answer 7

The triangle symbol ∆ is called delta and it is usually used to represent the spread of a variable. An example is to be found in Heisenberg's uncertainty principle equation for momentum 'p' and position 'x': -

∆p.∆x ≥ ħ/2

When the triangle is upside-down then it is a differential operator. Unfortunately I cannot find an upside-down triangle in this edit box's font (Calibri), so i'll use a notation ∆↓for the upside-down triangle! For example, ∆↓ may be written down for coordinates 'x,y,z' and variable 'V', as: -

∆↓= ∂V/ ∂x + ∂V/∂y + ∂V/∂z

or a double differential operator: -

∆↓²= ∂²V/ ∂x² + ∂²V/∂y² + ∂²V/∂z²

Answer 8

One means:

∆ = ∂²/∂x_i ∂x^i

The other one which is upside-down triange, and I cannot found it in may character map means  ÃƒÂ¢Ã‚ˆÂ‚/∂x_i

David:

∆↓= i ∂V/ ∂x + j ∂V/∂y + k ∂V/∂z