Re: Questions (Space)

Tina Hall <Tina_Hall@xxxxxxxxxxx> wrote:

Jonathan L Cunningham <spam@xxxxxxxxxxxxxxxxxxxx> wrote:

But I don't mind if other people imagine them as tiny things whizzing
around.

Well, I'm looking for an image. Your fuzzy balls don't work for me.

As the actress...

Because I would think those particles are a lot smaller (and
certainly visible if that big). I mean, bowling balls whizzing
around _ougth_ to be noticed, even ones without weight. <g>

The bigger they are, the lighter they are. It's the small ones that
are heavy :-)

Only if they have the same weight. ;)

No really, they don't have mass, so how could they weigh anything.

Photons do have mass. A red photon weighs about
0.0000000000000000000000000000000028 grammes (2.8*10^-36 kg), and a
blue photon nearly double that.


That's hardly any time at all to know stuff. If you are younger than
that, I'm surprised you've had time to learn anything at all. I'm only
<mumble> years old, and I've barely started.

There are living people who know this stuff, so I don't think it's a
matter of getting old, just learning it at the right time (when the mind
is fresh and agile).

There we disagree. There are living people who know stuff. But not
*this* stuff.

I probably misunderstood what you were looking for. You started off
asking questions like "How are signals transported through space?"

But when you say thinks like "There are living people who know this
stuff" it sounds like what you really wanted to know was "How do
people[*] think signals are transported through space?"

Where you probably have some kind of people in mind: experts, or people
who can send signals (make the equipment for satellites etc.).

To me, the first question is more interesting, but I don't believe that
there *are* living people who know the answer. There are living people
who know a lot about it, but no one *knows* what a photon is, or what an
electron is. All they can say is how they behave (e.g. in experiments).

Some people think they might be little strings, vibrating in a 26
dimensional space. That is *way* beyond my ability to visualise, and I
don't know enough maths to understand *why* they think that. (E.g. why
not 23 dimensions?)

Other people think something different.

What you are getting here (in this newsgroup) are (mostly) people's own
understanding, based on 19th century physics with a mix of early 20th
century physics thrown in. If any of those pictures are helpful, that's
good.

Talking about which. Are there any interesting sites with free brain
jogging exercises? (I borrowed some books from the library about how to
improve memory. And promptly forgot to give them back. Those I looked
into had some interesting exercises, though, and that is supposed to
increase mental agility.)

Dunno. I don't need them. My memory has improved with age, not got
worse. (I do forget things, but I don't think I'm worse at remembering
things than I was at 20. And when I was 20, I couldn't remember
*anything* that happened to me 20 years earlier :-) )

My personal tips for having a good memory: use it. Try to remember
things. Like most bodily capabilities, memory improves with exercise.

There *are* well known mnemonic techniques, for remembering things, but
I seldom use those either. Instead, if I need to remember something
important, I try to remember it more than one way. Sort of like making
backups.

But the *crucial* factor is to get into the *habit* of using your
memory, rather than relying on writing things down.

As an exercise, if you need to go shopping to buy only a few things,
make a list (at home) but don't take it with you. Just remember it.
That's what I do. (I used to use shopping lists, but now seldom bother
with them.)

Jonathan
p.s. Oh, and diet. People used to think that eating fish made you
brainier, and it turns out there is some truth in that! You don't have
to eat fish if you don't like it, there are alternatives (fish oils are
also good for the joints - in the diet I mean, not as a liniment). And
make sure you are not deficient in B vitamins: very important for nerve
and brain function, and present in e.g. wholegrain foods (and marmite).
A large contributor to poor memory in the elderly is poor circulation
(artherosclerosis(sp?)) leading to poor oxygen supply to the brain. If
you want a good memory, it's easier if you are healthy (probably
unnecessary or useless advice, that last one).

--
"I think too much - therefore I am mad!"
Agatha Clay playing Lucrezia Mongfish.
.

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