Boggle

In article <[email hidden]>, Judith
<[email hidden]> writes

Quoted message said:

Fran said:

Take a look at this - and then can someone please tell me why on /earth/
a *lamppost* of all things would need anything as high tech as a GPS to
tell it when it's getting dark?

Because a lamppost would be an /idiot/ to venture onto the street
without a GPS. What if it got lost and someone had to risk their life
finding it?

Don't you know /anything/ ?

Judith

Have they got street lights in the Rhondda then?
--
Bill Grey
http://www.billboy.co.uk

In article <[email hidden]>, Fran
<[email hidden]> writes

Quoted message said:

Does the GPS know when weather conditions below the satellites have made
lighting up seem like a good idea? No.

Does the GPS recognise a patch of overcastness that plunges the local
area into unexpected darkness that can be helped with a few
streetlights? No.

Is the GPS an incredibly expensive way to solve a problem we don't
actually have, on account of the problem having been already solved
years and years ago? Yes...

Does GPS know where the Rhondda is ?..........:-)
--
Bill Grey
http://www.billboy.co.uk

"W. D. Grey" <[email hidden]> schreef in bericht
news:[email hidden]...

Quoted message said:

In article <[email hidden]>, Judith
<[email hidden]> writes

Quoted message said:

Fran said:

Take a look at this - and then can someone please tell me why on /earth/
a *lamppost* of all things would need anything as high tech as a GPS to
tell it when it's getting dark?

Because a lamppost would be an /idiot/ to venture onto the street
without a GPS. What if it got lost and someone had to risk their life
finding it?

Don't you know /anything/ ?

Judith

Have they got street lights in the Rhondda then?

Not anymore, they're all gone walkabout :-)

--
"Beannachd leibh"

Theo
www.theosphotos.fotopic.net

Dave Fawthrop <[email hidden]> wrote

Quoted message said:

But it does *not* detect when it is raining and dark. The present ones
work on ambient light intensity and have done for 30 years to my certain
knowledge.

<Smile>
I watched the street lamps tonight. The ones on the adjacent
road to mine all fired at precisely the same time, about 4 or 5 minutes
after sunset (according to my GPS12).

The ones in my own road fired within one minute of this time, again
simultaneously. They are obviously on a timer, or I suppose they could
be all controlled by a master switch located in the area. They
could be on sensors, but I have never seen one switch off after once
striking, except when there was a fault.

They could easily be controlled by a strategically located, simple GPS,
possibly only 2 or 3 channels, which switches on whenever the sunset
time for the area is reached.
I will watch them tomorrow, and see whether the time has altered; it
should be 2 minutes later. 8-)
--
Gordon Harris

The Reid <[email hidden]> wrote

Quoted message said:

Following up to Fran

The lights round here appear to be on timers?

And round here.

Quoted message said:

I haven't noticed
them coming on in poor light,

Nor have I.

Quoted message said:

but then I've not been paying
attention. What's the general position? I don't remember the
lights coming on at the total eclipse, but then I was on a
headland in Cornwall.

Quoted message said:

Is the GPS an incredibly expensive way to solve a problem we don't
actually have, on account of the problem having been already solved
years and years ago? Yes...

I wonder how much these GPS devices cost? I'm assuming they are
not fully fledged guidance units? I've yet to hear "LEFT, I SAID
LEFT" "GATSO ahead" or even "Land Ahoy" from the top of the
lampposts in my street!

A very simple one would be ok, just to detect approximate area and
sunset time.
--
Gordon Harris

The Reid <[email hidden]> wrote

Quoted message said:

Following up to Fran

Quoted message said:

Take a look at this - and then can someone please tell me why on /earth/
a *lamppost* of all things would need anything as high tech as a GPS to
tell it when it's getting dark?

lampposts come on at lighting up time.
lamppost wants to know when that is.
GPS can tell them.
Map and compass, light sensors or timers cant? Is this answer too
boring?

No, see my other post. Two different authorities (I live on a
boundary), switched on all their lights simultaneously this evening, but
Stockport's came on about one minute before Tameside's.

The times were a minute or two after sunset by my GPS.

Thinks: Should I get out of bed to check the sunrise OFF tomorrow?

Yep, 07:41 isn't too bad, my clock radio is set to 07:45 already.
:-)
--
Gordon Harris

The Reid said:

lampposts come on at lighting up time.
lamppost wants to know when that is.
GPS can tell them.
Map and compass, light sensors or timers cant?

Duh! If the lamppost can't see the map and compass then it must have
gone dark, silly!

Judith

[email hidden] said...

Quoted message said:

In article <[email hidden]>, Judith
<[email hidden]> writes

Quoted message said:

Fran said:

Take a look at this - and then can someone please tell me why on /earth/
a *lamppost* of all things would need anything as high tech as a GPS to
tell it when it's getting dark?

Because a lamppost would be an /idiot/ to venture onto the street
without a GPS. What if it got lost and someone had to risk their life
finding it?

Don't you know /anything/ ?

Have they got street lights in the Rhondda then?

Unfortunately, yes they have. If I want a nice clear sky to look at
there's a spot just behind the wall of the school opposite me where no
light seems to get in... which must look seriously weird to anyone
strolling through on a late-night dog walkies... The only other place
to get a clear sky is at the picnic area on the Rhigos - and that's only
good if the traffic is sufficiently light. I do not particularly like
street lights.
--
To reply see 'from' in headers; lose the domain, and insert dots and @
where common sense dictates.

[email hidden] said...

Quoted message said:

The Reid said:

lampposts come on at lighting up time.
lamppost wants to know when that is.
GPS can tell them.
Map and compass, light sensors or timers cant?

Duh! If the lamppost can't see the map and compass then it must have
gone dark, silly!

Judith dear, just what /have/ you been putting in that cake of yours?

--
To reply see 'from' in headers; lose the domain, and insert dots and @
where common sense dictates.

[email hidden] said...

Quoted message said:

Quoted message said:

Is the GPS an incredibly expensive way to solve a problem we don't
actually have, on account of the problem having been already solved
years and years ago? Yes...

I wonder how much these GPS devices cost? I'm assuming they are
not fully fledged guidance units? I've yet to hear "LEFT, I SAID
LEFT" "GATSO ahead" or even "Land Ahoy" from the top of the
lampposts in my street!

The ones round my way don't have the audio version either.
--
To reply see 'from' in headers; lose the domain, and insert dots and @
where common sense dictates.

Chris Malcolm said:

But the whole "half hour before sunset" thing is an attempt to frame a
law which catches the otherwise rather nebulous "when the light starts
going", the most frequent cause of which is the sun going down. But of
course it's also wise and useful to light up during heavily overcast
days, eclipses, and so on. Which can all be solved be a simple cheap
light sensor.

To be honest, I've never seen overcast weather dark enough to require
streetlights IMO.

But on the other hand I have tried to determine when it really gets dark
after sunset. The civil twilight (sun 6 degrees below the horizon),
nautical twilight (-12 degrees) and astronomical twilight (-18 degrees,
never gets truly dark in summer) haven't been much help in determining the
point at which a walker needs to turn a torch on. Obviously it depends on
other factors like one's eyes adjusting to the dark and whether there's a
full moon or not, and whether you are walking through a forest.

But the point I'm coming to is this, it seems to get dark earlier when it's
overcast. So although I see no need for streetlights to come on in the
middle of the day during a thunderstorm, it would be a good idea for the
lights to come on earlier in heavily overcast weather as night approaches.

Paul

Fran said:

Does the GPS recognise a patch of overcastness that plunges the local
area into unexpected darkness that can be helped with a few
streetlights? No.

Have you ever needed to switch a torch on in the middle of the day in bad
light? I've never seen this theoretical "midday darkness" that some of you
are talking about.

Paul

"Paul Saunders" <[email hidden]> schreef in bericht
news:[email hidden]...

Quoted message said:

Fran said:

Does the GPS recognise a patch of overcastness that plunges the local
area into unexpected darkness that can be helped with a few
streetlights? No.

Have you ever needed to switch a torch on in the middle of the day in bad
light? I've never seen this theoretical "midday darkness" that some of
you are talking about.

Not for walking but for driving a car turning on the streetlights is
necessary several times each year. Especially during thunder- or hailstorms.

--
"Beannachd leibh"

Theo
www.theosphotos.fotopic.net

In article <[email hidden]>, Fran
<[email hidden]> writes

Quoted message said:

[email hidden] said...

Quoted message said:

The Reid said:

lampposts come on at lighting up time.
lamppost wants to know when that is.
GPS can tell them.
Map and compass, light sensors or timers cant?

Duh! If the lamppost can't see the map and compass then it must have
gone dark, silly!

Judith dear, just what /have/ you been putting in that cake of yours?

Whatever it is you can't have any so there!
--
Bill Grey
http://www.billboy.co.uk

Following up to Fran

Quoted message said:

The ones round my way don't have the audio version either.

I bet you haven't got the gold paving stones either?
--
Mike Reid
Walk-eat-photos UK "http://www.fellwalk.co.uk" <-- you can email us@ this site
Walk-eat-photos Spain "http://www.fell-walker.co.uk" <-- dontuse@ all, it's a spamtrap

Following up to theo

Quoted message said:

Not anymore, they're all gone walkabout :-)

like Ents?
--
Mike Reid
Walk-eat-photos UK "http://www.fellwalk.co.uk" <-- you can email us@ this site
Walk-eat-photos Spain "http://www.fell-walker.co.uk" <-- dontuse@ all, it's a spamtrap

Following up to Paul Saunders

Quoted message said:

Have you ever needed to switch a torch on in the middle of the day in bad
light? I've never seen this theoretical "midday darkness" that some of you
are talking about.

I've seen poor visibility for driving which required headlights
so others could see you, I've not seen true darkness in the
daytime, even at the eclipse
--
Mike Reid
Walk-eat-photos UK "http://www.fellwalk.co.uk" <-- you can email us@ this site
Walk-eat-photos Spain "http://www.fell-walker.co.uk" <-- dontuse@ all, it's a spamtrap

Following up to Gordon

Quoted message said:

I will watch them tomorrow, and see whether the time has altered; it
should be 2 minutes later. 8-)

the spirit of scientific enquiry!
--
Mike Reid
Walk-eat-photos UK "http://www.fellwalk.co.uk" <-- you can email us@ this site
Walk-eat-photos Spain "http://www.fell-walker.co.uk" <-- dontuse@ all, it's a spamtrap

"The Reid" <[email hidden]> schreef in bericht
news:[email hidden]...

Quoted message said:

Following up to theo

Quoted message said:

Not anymore, they're all gone walkabout :-)

like Ents?

Buruhmbarahhrumf ootookoeloerisie hrumhrumbadoeroee (translation = We are
marching to overthrow the energycompany that wants us to stay put. We are
not slaves ! We don't want gps to control us !)

--
"Beannachd leibh"

Theo
www.theosphotos.fotopic.net

The Reid <[email hidden]> wrote

Quoted message said:

Following up to Gordon

Quoted message said:

I will watch them tomorrow, and see whether the time has altered; it
should be 2 minutes later. 8-)

the spirit of scientific enquiry!

<G>
I missed the switch-off this morning. At 07:38 they were already off,
three minutes before sunrise.
--
Gordon Harris