Re: Binding Energy Question

On 24 fév, 20:03, higis <hg...@xxxxxxxxx> wrote:
On Feb 25, 8:20 am, Sam Wormley <sworml...@xxxxxxxxx> wrote:



higis wrote:
The term binding energy is not so intuitive, isn't it.
When you have hydrogen atoms and you fuse them
into helium. It would release energy as in hydrogen
bomb. So how can you say it is binding energy
when the energy is gone.

To decompose the helium back into hydrogen.
It is said that it need energy input. If you can
pull helium apart against the strong force turning
into hydrogen atoms (gets separated). Is the energy
to pull it apart consist the binding energy that
would reconstitute the parts? Or do you need to
supply another energy that would make up the
binding energy?

higis

Have a read:http://en.wikipedia.org/wiki/Binding_energy-Hide quoted text -

- Show quoted text -

Yes. And I have trouble understand the details. For instance.
Wikipedia says:

"In general, binding energy represents the mechanical work
which must be done in acting against the forces which hold
an object together, while disassembling the object into
component parts separated by sufficient distance that further
separation requires negligible additional work."

Supposed I use mechanical work to pull the protons apart
in the helium to turn them into hydrogen. Well. After
the separations, the mass of the separated 2 hydrogens
is more than the 2 hydrogens fused in the helium (let's
just focus on the hydrogens). Now where do the extra
mass of the separated hydrogens come from? From
the mechanical work to pull the protons apart themselves?
Or does it conjure the energy or mass from the surrounding
(where) to reconstitute the separated hydrogens increased
mass?

hgis

You won't get a straight answer from orthodox physics.

All these explanations date back to before the internal
structure of nucleons was known, and no requestioning
of outdated explanations nor any update was ever
carried out.

André Michaud
.

Relevant Pages

  • Re: Binding Energy Question
    ... So how can you say it is binding energy ... separation requires negligible additional work." ... is more than the 2 hydrogens fused in the helium (let's ...
    (sci.physics)
  • Re: Binding Energy Question
    ... So how can you say it is binding energy ... separation requires negligible additional work." ... is more than the 2 hydrogens fused in the helium (let's ... physics provides a description of understood ...
    (sci.physics)
  • Re: Binding Energy Question
    ... So how can you say it is binding energy ... pull helium apart against the strong force turning ... the mass of the separated 2 hydrogens ... is more than the 2 hydrogens fused in the helium (let's ...
    (sci.physics)
  • Re: Binding Energy Question
    ... So how can you say it is binding energy ... the mass of the separated 2 hydrogens ... is more than the 2 hydrogens fused in the helium (let's ... you separate a helium atom into two hydrogens, ...
    (sci.physics)
  • Re: Binding Energy Question
    ... So how can you say it is binding energy ... To decompose the helium back into hydrogen. ... separation requires negligible additional work." ... is more than the 2 hydrogens fused in the helium (let's ...
    (sci.physics)