dennis@home wrote:
There is no such thing as analogue the charge on electrons
is discrete ie. digital.

The properties of an electron consist of much more than it's
charge; a free electron can have any momentum, for example;
or electrons might be in correlated states with each other,
where the correlation parameters are both uncountable and
continuous.

Its the same with photons used for transmission they can't be
subdivided so are also digital.

You can split photons, and you can place them in correlated states
that are parameterized by real (or complex numbers); they can also
have a continuous range of frequencies.

So no, everying is not digital. However, lots of digital technology
confines electrons and/or photons in ways that make the natural
states for them discrete, i.e. digital; although sometimes their
states might be part discrete, part continuous (electrons in a 2D
quantum well, for example).


#Paul