Clock

On 02/12/2018 5:36 PM, Paul wrote:
Rene Lamontagne wrote:
On 02/12/2018 1:25 PM, Paul wrote:
Mark Lloyd wrote:
On 02/11/2018 01:08 PM, Peter Percival wrote:
Ken Blake wrote:

If you want to know the time very accurately, of course a digital
clock is more better.

How come?Â* There is nothing about digit clocks that mean that they
can't be wrong.

Sorry, I used the wrong work there. It should be "precision".

However, some clocks are now controlled by internet or radio, and
are more accurate.


The radio are really the best, because you never have
to adjust them. All they need is a source of power, and
they don't need a 60Hz reference to keep time.

The radio that does that, is at low frequency, like 60KHz.
The frequency used, varies with country or locale.
(And this is not GPS either. This works even if GPS
was knocked out. The reason for not using GPS, is the
GPS constellation might not be receive-able inside your house.
60KHz penetrates buildings a lot better.)

You may not get a usable signal during the entire 24 hour day, but
in good circumstances, your "radio clock" is synced at least once
a day. Even if your clock has a 100ppm xtal, it doesn't matter,
because the radio sync will bring it back to where it should be.
You don't have to have an atomic clock in the box.

The antennas used, come two ways. You can use a wire loop with
huge dimensions (i.e. you'd better be on a farm). However,
using ferrite rods, you can make a compact design that
is just as good. The one pictured here, might have been
removed from the back of a commercial wall clock. That's to give
an idea of how big a non-hobbyist one is.

https://electronics.stackexchange.co...-wwvb-receiver


The Russians make the best ferrite rods for this.
Ferrites are available in a number of compositions, and
I don't think there's much commercial interest in making
the rods for this application. But I've seen hobbyists
who claim some Russian-sourced rods worked well.
I've seen some designs, that have multiple ferrite rods
with the wire wrapped around the whole bundle.

This is one of those niche hobbyist activities (if
you want to build your own, rather than buy one). I think
most people who dabble in this, they want the sync info
to be available all day, and that's why they want their
design to be more sensitive than a store-bought one.

If the central transmitter goes down, then no more
sync for you. You're on your own then. An EMP could
easily knock out such a site. Or government cutbacks.

You can also buy the pre-built ones if you want. But you'll
need something to decode the serial output and actually use it.
You know, the rest of your "clock" :-)

https://www.ebay.com/p/3-Pcs-WWVB-60...38#UserReviews


Â*Â*Â* Paul

My La Crosse weather forecast station has a built in one tuned to
WWVB, If I want to set all the other clocks in the house this is the
reference I use.

Rene

Does it have a LED that indicates when the 60KHz carrier is present ?

There is a coverage map for the USA, and the signal strength
contours change with time of day.

Â*Â* Paul


No, it has a Little icon of a satellite dish with waves emanating from it.
If the carrier is not locked in the icon disappears

Rene

On 02/12/2018 5:49 PM, Mark Lloyd wrote:
On 02/12/2018 11:53 AM, Ron C wrote:

[snip]

Ah the fun of clocks and mental gymnastics! Not saying that
I'm, like, real old or anything, but the clocks in my primary
weren't just analog but the numbers were Roman numerals. :-)


IIRC, a lot of analog clocks use Roman numerals. Do you remember if 4
was IV or IIII?

* ...snip...

*** Paul

==



School clock, Way back in school About 1940 to 1948 used IV for 4. :-)

Rene

Mark Lloyd wrote:
On 02/12/2018 11:53 AM, Ron C wrote:

[snip]

Ah the fun of clocks and mental gymnastics! Not saying that
I'm, like, real old or anything, but the clocks in my primary
weren't just analog but the numbers were Roman numerals. :-)


IIRC, a lot of analog clocks use Roman numerals. Do you remember if 4
was IV or IIII?

They make clocks that use symbols from the
movie "Predator". If the kids can handle those,
Roman numerals shouldn't be a problem.

Paul

On 13/2/2018 00:07, Sam E wrote:
On 02/11/2018 10:49 AM, Mr. Man-wai Chang wrote:

Well, don't you want a 100% simulated pendulum clock!?

A pendulum was once the best thing we had for making an accurate clock.
Now it's an art object.

Still a good physics experiment, sometimes in examinations!


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On 02/12/2018 11:29 AM, Rene Lamontagne wrote:
On 02/12/2018 11:09 AM, Rene Lamontagne wrote:
On 02/12/2018 10:45 AM, Mark Lloyd wrote:
On 02/11/2018 12:28 PM, Rene Lamontagne wrote:

[snip]

About 1980 I purchased an Apple 2+ it came loaded wit 16K of ram,Yes
16K.

I didn't get a computer until 1982 and it was a Commodore VIC-20 with
5K RAM. However, later I did add a 24K expansion.

BTW, I wrote a BASIC expansion that fit in 8K. I got a lot in there.

I used to enter programs from various Apple magazines on the
keyboard, some were in basic and some were in machine language.
one day a magazine had a machine language program for an Analog clock,
But it required 24K of memory, I only had 16K.

I wonder how much memory a digital clock would take. Probably a lot
less.

What to do? I agonized over it for a few days as I REALLY wanted
that clock.
So finally I went and bought the extra 8 1K chips I needed for
$360.00 cdn, Well I got my clock and to this day I wear an analog
wris****ch and have an analog clock hanging in the living room. :-)

Rene


We can still get the voice broadcasts of WWV and WWVH/nist on
shortwave radio

https://tf.nist.gov/stations/iform.html

Rene

Timepieces are really *necessary* couldn't live without one'
Ferinstance I just did a series of time checks on my PC with these results.

Boot time to desktopÂ*Â*Â*Â*Â*Â*Â*Â*Â* 56 seconds
time to awake from sleepÂ*Â*Â*Â*Â*Â* 3 seconds
Time to shutdownÂ*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â*Â* 6 seconds

Now I can spend the rest of the day knowing that the universe in general
is running as it should.Â* :-)

Rene



Big Ben is the name of the Bell, not the clock (believe)

Rene

On 13/2/2018 22:49, Rene Lamontagne wrote:

Big Ben is the name of the Bell, not the clock (believe)


Isn't Big Ben referring to the *WHOLE* clock tower? How could you have
time with just the clock face but without the gears inside the tower?


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On 02/13/2018 8:53 AM, Mr. Man-wai Chang wrote:
On 13/2/2018 22:49, Rene Lamontagne wrote:

Big Ben is the name of the Bell, not the clock (believe)


Isn't Big Ben referring to the *WHOLE* clock tower? How could you have
time with just the clock face but without the gears inside the tower?




Better explanation.

Rene

On 13/2/2018 22:58, Rene Lamontagne wrote:
On 02/13/2018 8:53 AM, Mr. Man-wai Chang wrote:
On 13/2/2018 22:49, Rene Lamontagne wrote:

Big Ben is the name of the Bell, not the clock (believe)


Isn't Big Ben referring to the *WHOLE* clock tower? How could you have
time with just the clock face but without the gears inside the tower?

Better explanation.

Wrong! it's about the *DEFINITION* of "Big Ben"!!

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On 13/2/2018 22:58, Wolf K wrote:
On 2018-02-13 09:53, Mr. Man-wai Chang wrote:
On 13/2/2018 22:49, Rene Lamontagne wrote:

Big Ben is the name of the Bell, not the clock (believe)


Isn't Big Ben referring to the *WHOLE* clock tower? How could you have
time with just the clock face but without the gears inside the tower?

Just look it up, don't speculate:

https://en.wikipedia.org/wiki/Big_Ben


That's *just one* definition, among a lot others not yet written into
that webpage? Any stand from the UK Government?

--
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Mr. Man-wai Chang wrote:

Isn't Big Ben referring to the *WHOLE* clock tower?

Big Ben is only a nickname, some people use it to refer to the whole
tower, or the whole clock, but really it's just for the largest bell in
the tower ...

Mr. Man-wai Chang wrote:

Wolf K wrote:

https://en.wikipedia.org/wiki/Big_Ben

That's *just one* definition, among a lot others not yet written into
that webpage? Any stand from the UK Government?

http://www.parliament.uk/about/livin...alace/big-ben/

On 13/2/2018 23:42, Andy Burns wrote:
Mr. Man-wai Chang wrote:

Wolf K wrote:

https://en.wikipedia.org/wiki/Big_Ben

That's *just one* definition, among a lot others not yet written into
that webpage? Any stand from the UK Government?

http://www.parliament.uk/about/livin...alace/big-ben/

Thank you, Your Honor!

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On 13/2/2018 23:41, Andy Burns wrote:
Mr. Man-wai Chang wrote:

Isn't Big Ben referring to the *WHOLE* clock tower?

Big Ben is only a nickname, some people use it to refer to the whole
tower, or the whole clock, but really it's just for the largest bell in
the tower ...

Your saying is not far from that Wikipedia web-page!



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"Mr. Man-wai Chang" wrote in news5uu4t$nfd$1
@toylet.eternal-september.org:

On 13/2/2018 22:49, Rene Lamontagne wrote:

Big Ben is the name of the Bell, not the clock (believe)


Isn't Big Ben referring to the *WHOLE* clock tower? How could you have
time with just the clock face but without the gears inside the tower?


The bell that rings the time is actually what ic called Big Ben. Over time
the term has come to mean the bell, the clock, and the tower in the
popular vernacular.

On 14/2/2018 00:11, Tim wrote:
"Mr. Man-wai Chang" wrote in news5uu4t$nfd$1
@toylet.eternal-september.org:

On 13/2/2018 22:49, Rene Lamontagne wrote:

Big Ben is the name of the Bell, not the clock (believe)


Isn't Big Ben referring to the *WHOLE* clock tower? How could you have
time with just the clock face but without the gears inside the tower?

The bell that rings the time is actually what ic called Big Ben. Over time
the term has come to mean the bell, the clock, and the tower in the
popular vernacular.

Do you have the origin of this saying, as for example, heard from old
people?

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
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