On Fri, 01 Feb 2019 13:38:18 +0000, Bill Wright wrote:

On 01/02/2019 10:30, Bob Eager wrote:

I know the Darwin family quite well because one of the University of
Kent Colleges is named after Charles Darwin.

That needs further explanation.

In what way? What do you need?
--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

On Friday, 1 February 2019 15:59:17 UTC, Bob Eager wrote:
On Fri, 01 Feb 2019 13:38:18 +0000, Bill Wright wrote:

On 01/02/2019 10:30, Bob Eager wrote:

I know the Darwin family quite well because one of the University of
Kent Colleges is named after Charles Darwin.

That needs further explanation.

In what way? What do you need?

Maybe he means....

I work at Queen Mary college but I don't know much about her and never met her and anything I could find out might not all be true anyway.

On Fri, 01 Feb 2019 08:03:49 -0800, whisky-dave wrote:

On Friday, 1 February 2019 15:59:17 UTC, Bob Eager wrote:
On Fri, 01 Feb 2019 13:38:18 +0000, Bill Wright wrote:

On 01/02/2019 10:30, Bob Eager wrote:

I know the Darwin family quite well because one of the University of
Kent Colleges is named after Charles Darwin.

That needs further explanation.

In what way? What do you need?

Maybe he means....

I work at Queen Mary college but I don't know much about her and never
met her and anything I could find out might not all be true anyway.

I have met and dined with many of the direct descendants of Charles
Darwin. Nice people, very interesting and frighteningly clever as well as
practical.



--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

On 01/02/2019 13:20, Graham. wrote:
On 01/02/2019 08:46, Harry Bloomfield wrote:
Brian Gaff presented the following explanation :
One thing that has always interested me is the fact that many
shortwave stations even today, give the frequencies in Khz, but the
band in metres.
Â*Now I used to know the conversion by heart when I could see, but over
the years its kind of faded, but I know it contains the speed of light
in metres per second.

metres =Â*Â*Â* 299792.458/ kHz

kHz =Â* 299792.458/ metres

...in a vacuum. I await with interest the essay on the conversion
factor for BBC long wave from Droitwich

Aren't the pips deliberately retarded so they are accurately received
100 miles away? Perfect for Lon^H^H^HSalford.




Always if they travel by DAB :-).

PS How come the midnight news on R4 is still introduced by the
Big Ben Bongs, together with its preamble. ?.

Are the BBC transmitting fake chimes while it is silenced ?.

On 2/1/2019 10:58 AM, Bob Eager wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

The same film apparently has a plug being wired with brown/blue/gren-and-
yellow flex.

I missed that! I should watch again, to see if there's anything else...

On 01/02/2019 12:42, Another Dave wrote:
On 01/02/2019 09:23, Scott wrote:
On Fri, 01 Feb 2019 08:46:54 GMT, Harry Bloomfield
wrote:

Brian Gaff presented the following explanation :
One thing that has always interested me is the fact that many shortwave
stations even today, give the frequencies in Khz, but the band in
metres.
Â* Now I used to know the conversion by heart when I could see, but
over the
years its kind of faded, but I know it contains the speed of light
in metres
per second.

metres =Â*Â*Â* 299792.458/ kHz

kHz =Â* 299792.458/ metres

I thought it was 300,000.Â* The teaching at my school must have been a
bit rubbish!

There has been talk of redefining the metre so the speed of light in
vacuo is precisely that. Since the metre isn't 1/10,000,000th the
distance from the equator to the pole as intended, it shouldn't offend
anybody. I suppose too much inertia has now made the change impossible.

3*10^8 isn't all that 'rational' as it has a 3 in it. Why not redefine
the foot so that c is 10^9 ft/s?

--
Max Demian

In article ,
S Viemeister wrote:
On 2/1/2019 10:58 AM, Bob Eager wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

The same film apparently has a plug being wired with
brown/blue/gren-and- yellow flex.

I missed that! I should watch again, to see if there's anything else...

a Routemaster?

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On 01/02/2019 12:34, Fredxx wrote:
On 01/02/2019 12:24:36, Jethro_uk wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

Wikipedia says, "Centigrade, a historical forerunner to the Celsius
temperature scale, synonymous in modern usage"

(also when did Peking change it's name ? And Bombay ? And when did
"Islamic" become "Islamist" ? )

Islamic just means Muslim, a follower of Mohammed. Islamists are the
more fanatical kind.

--
Max Demian

"Max Demian" wrote in message
o.uk...
3*10^8 isn't all that 'rational' as it has a 3 in it. Why not redefine the
foot so that c is 10^9 ft/s?

Because the foot is a "toy" folk unit as opposed to a serious scientific
unit ;-)

Let's define pi=3 and e=3 while we're at it ;-)

On 01/02/2019 15:59, Bob Eager wrote:
On Fri, 01 Feb 2019 13:38:18 +0000, Bill Wright wrote:

On 01/02/2019 10:30, Bob Eager wrote:

I know the Darwin family quite well because one of the University of
Kent Colleges is named after Charles Darwin.

That needs further explanation.

In what way? What do you need?


Why did the fact of one of the University of
Kent Colleges being named after Charles Darwin mean that you know the
Darwin family quite well?

Bill

On 01/02/2019 16:09, Bob Eager wrote:


I have met and dined with many of the direct descendants of Charles
Darwin. Nice people, very interesting and frighteningly clever as well as
practical.


I have met and dined with many of the direct descendants of my wife's
great grandfather. Dreadful people, frightfully boring, staggeringly
stupid, as well as being hopelessly lacking in any sort of practical
ability whatsoever.

Bill

On 01/02/2019 09:23, Scott wrote:
On Fri, 01 Feb 2019 08:46:54 GMT, Harry Bloomfield
wrote:

Brian Gaff presented the following explanation :
One thing that has always interested me is the fact that many shortwave
stations even today, give the frequencies in Khz, but the band in metres.
Now I used to know the conversion by heart when I could see, but over the
years its kind of faded, but I know it contains the speed of light in metres
per second.

metres = 299792.458/ kHz

kHz = 299792.458/ metres

I thought it was 300,000. The teaching at my school must have been a
bit rubbish!

Nah, C is one foot per nanosecond.

Cheers
--
Clive

On 01/02/2019 17:48, Bill Wright wrote:
On 01/02/2019 16:09, Bob Eager wrote:


I have met and dined with many of the direct descendants of Charles
Darwin. Nice people, very interesting and frighteningly clever as well as
practical.


I have met and dined with many of the direct descendants of my wife's
great grandfather. Dreadful people, frightfully boring, staggeringly
stupid, as well as being hopelessly lacking in any sort of practical
ability whatsoever.

Bill

Are they Labour or Limp Dem MPs ?.

On Friday, February 1, 2019 at 12:34:23 PM UTC, Fredxx wrote:
On 01/02/2019 12:24:36, Jethro_uk wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

Wikipedia says, "Centigrade, a historical forerunner to the Celsius
temperature scale, synonymous in modern usage"

I was told at college that Centigrade was ambiguous as it is also a unit of angle as used in France.

On Friday, 1 February 2019 17:48:33 UTC, Bill Wright wrote:
On 01/02/2019 16:09, Bob Eager wrote:


I have met and dined with many of the direct descendants of Charles
Darwin. Nice people, very interesting and frighteningly clever as well as
practical.


I have met and dined with many of the direct descendants of my wife's
great grandfather. Dreadful people, frightfully boring, staggeringly
stupid, as well as being hopelessly lacking in any sort of practical
ability whatsoever.


I had relatives like that.
Makes you wonder how they survive.

On Friday, 1 February 2019 15:58:14 UTC, Bob Eager wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

The same film apparently has a plug being wired with brown/blue/gren-and-
yellow flex.

You often see modern light switches in period films.
Also roads with parallel ruts,ie no horse tracks in the middle.

On Friday, February 1, 2019 at 9:31:26 AM UTC, harry wrote:
On Friday, 1 February 2019 01:33:02 UTC, S Viemeister wrote:
Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

It's c/s not cycles. (cycles per second)
If you leave the time element out, it's meaningless.
https://en.wikipedia.org/wiki/Hertz

Radio Moscow was still using metre bands and megacycles per second in the 1980's

On Friday, February 1, 2019 at 9:31:26 AM UTC, harry wrote:
On Friday, 1 February 2019 01:33:02 UTC, S Viemeister wrote:
Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

It's c/s not cycles. (cycles per second)
If you leave the time element out, it's meaningless.
https://en.wikipedia.org/wiki/Hertz

Radio Moscow was still using metre bands and kilocycles per second in the 1980's

On Fri, 01 Feb 2019 17:44:10 +0000, Bill Wright wrote:

On 01/02/2019 15:59, Bob Eager wrote:
On Fri, 01 Feb 2019 13:38:18 +0000, Bill Wright wrote:

On 01/02/2019 10:30, Bob Eager wrote:

I know the Darwin family quite well because one of the University of
Kent Colleges is named after Charles Darwin.

That needs further explanation.

In what way? What do you need?


Why did the fact of one of the University of
Kent Colleges being named after Charles Darwin mean that you know the
Darwin family quite well?

Ah, I see. I was a founder member of the College. I ended up being its
Master for 10 years. That's a sort of executive position covering student
welfare (e.g. emergency counselling, fixiung problems), discipline
(fining students or chucking them out of their accommodation!) and
entertaining important guests. The Darwin family used to come to our
dinners, and I got to know them quite well. I still see one of them
fairly often.


--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

On 01/02/2019 21:24, Tim Streater wrote:
In article ,
harry wrote:

On Friday, 1 February 2019 15:58:14 UTC, Bob EagerÂ* wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

The same film apparently has a plug being wired with
brown/blue/gren-and-
yellow flex.

You often see modern light switches in period films.
Also roads with parallel ruts,ie no horse tracks in the middle.

Watching an episode of Foyle's War larse night. There was a wartime
(presumably prewar model) car that had two rear lights. I thought that
was only a postwar requirement.

Doesn't mean they didn't make ones with two at the back.

--
Max Demian

"Jethro_uk" wrote in message
...
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

(also when did Peking change it's name ? And Bombay ?

When lazy colonists showed up originally, and
back to the original when they went home.

And when did "Islamic" become "Islamist" ? )

And when did airfield become airport.

NY wrote:

"Roger Hayter" wrote in message
...
Light frequencies, and especially infrared, are often still described as
a wavelength in nanometres.

Whereas at one time they were quoted in Angstroms - when 1 ? is 0.1 nm or
100 pm.

I remember them! I came across them regarding X-rays, I don't know if
they are still used in that field.


--

Roger Hayter

On Sat, 2 Feb 2019 00:25:47 +0000, (Roger Hayter)
wrote:

NY wrote:

"Roger Hayter" wrote in message
...
Light frequencies, and especially infrared, are often still described as
a wavelength in nanometres.

Whereas at one time they were quoted in Angstroms - when 1 ? is 0.1 nm or
100 pm.

I remember them! I came across them regarding X-rays, I don't know if
they are still used in that field.

X-rays and gamma rays are usually described in terms of their photon
energy (in electron volts). It yields more sensible numbers and in
most cases is the only property that can be readily measured.

"harry" wrote in message
...
On Friday, 1 February 2019 17:48:33 UTC, Bill Wright wrote:
On 01/02/2019 16:09, Bob Eager wrote:


I have met and dined with many of the direct descendants of Charles
Darwin. Nice people, very interesting and frighteningly clever as well
as
practical.


I have met and dined with many of the direct descendants of my wife's
great grandfather. Dreadful people, frightfully boring, staggeringly
stupid, as well as being hopelessly lacking in any sort of practical
ability whatsoever.


I had relatives like that.
Makes you wonder how they survive.

The modern cradle to grave nanny state.

On 01/02/2019 17:58, Andrew wrote:
On 01/02/2019 17:48, Bill Wright wrote:
On 01/02/2019 16:09, Bob Eager wrote:


I have met and dined with many of the direct descendants of Charles
Darwin. Nice people, very interesting and frighteningly clever as
well as
practical.


I have met and dined with many of the direct descendants of my wife's
great grandfather. Dreadful people, frightfully boring, staggeringly
stupid, as well as being hopelessly lacking in any sort of practical
ability whatsoever.

Bill

Are they Labour or Limp Dem MPs ?.

They are don't knows.

Bill

On 01/02/2019 22:38, Bob Eager wrote:

Ah, I see. I was a founder member of the College. I ended up being its
Master for 10 years. That's a sort of executive position covering student
welfare (e.g. emergency counselling, fixiung problems), discipline
(fining students or chucking them out of their accommodation!) and
entertaining important guests. The Darwin family used to come to our
dinners, and I got to know them quite well. I still see one of them
fairly often.



I'm genuinely impressed.

Bill

"Roger Hayter" wrote in message
...
NY wrote:

"Roger Hayter" wrote in message
...
Light frequencies, and especially infrared, are often still described
as
a wavelength in nanometres.

Whereas at one time they were quoted in Angstroms - when 1 ? is 0.1 nm or
100 pm.

I remember them! I came across them regarding X-rays, I don't know if
they are still used in that field.

Yes they are
https://en.wikipedia.org/wiki/%C3%85ngstr%C3%B6m#Use

On 01/02/2019 20:42, wrote:
On Friday, February 1, 2019 at 9:31:26 AM UTC, harry wrote:
On Friday, 1 February 2019 01:33:02 UTC, S Viemeister wrote:
Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

It's c/s not cycles. (cycles per second)
If you leave the time element out, it's meaningless.
https://en.wikipedia.org/wiki/Hertz

Radio Moscow was still using metre bands and kilocycles per second in the 1980's

Odd.

I would have thought they would be using valves and electricity?


--
€œProgress is precisely that which rules and regulations did not foresee,€�

€“ Ludwig von Mises

On 01/02/2019 21:24, Tim Streater wrote:
In article ,
harry wrote:

On Friday, 1 February 2019 15:58:14 UTC, Bob EagerÂ* wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

The same film apparently has a plug being wired with
brown/blue/gren-and-
yellow flex.

You often see modern light switches in period films.
Also roads with parallel ruts,ie no horse tracks in the middle.

Watching an episode of Foyle's War larse night. There was a wartime
(presumably prewar model) car that had two rear lights. I thought that
was only a postwar requirement.

Might have been, but plenty of cars had them in the 30s



--
€œProgress is precisely that which rules and regulations did not foresee,€�

€“ Ludwig von Mises

On 01/02/2019 22:57, 2987fr wrote:


"Jethro_uk" wrote in message
...
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

(also when did Peking change it's name ? And Bombay ?

When lazy colonists showed up originally, and
back to the original when they went home.

And when did "Islamic" become "Islamist" ? )

And when did airfield become airport.

When international commercial traffic started using them

In fact in between was 'aerodrome'.



--
"Socialist governments traditionally do make a financial mess. They
always run out of other people's money. It's quite a characteristic of them"

Margaret Thatcher

In article ,
2987fr wrote:


"Jethro_uk" wrote in message
...
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

(also when did Peking change it's name ? And Bombay ?

When lazy colonists showed up originally, and
back to the original when they went home.

And when did "Islamic" become "Islamist" ? )

And when did airfield become airport.

when the used concrete instead of grass for the runways

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

"The Natural Philosopher" wrote in message
...
On 01/02/2019 22:57, 2987fr wrote:


"Jethro_uk" wrote in message
...
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

(also when did Peking change it's name ? And Bombay ?

When lazy colonists showed up originally, and
back to the original when they went home.

And when did "Islamic" become "Islamist" ? )

And when did airfield become airport.

When international commercial traffic started using them

Thats not really true in europe with airships.

In fact in between was 'aerodrome'.

True.

"charles" wrote in message
...
In article ,
2987fr wrote:


"Jethro_uk" wrote in message
...
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

(also when did Peking change it's name ? And Bombay ?

When lazy colonists showed up originally, and
back to the original when they went home.

And when did "Islamic" become "Islamist" ? )

And when did airfield become airport.

when the used concrete instead of grass for the runways

Fraid not and plenty of them still don’t use concrete.

On Friday, 1 February 2019 23:03:49 UTC, 2987fr wrote:
"Jethro_uk" wrote in message
...
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

(also when did Peking change it's name ? And Bombay ?

When lazy colonists showed up originally, and
back to the original when they went home.

And when did "Islamic" become "Islamist" ? )

And when did airfield become airport.

We always called them "Aerodromes" in the UK.

On Saturday, 2 February 2019 08:33:54 UTC, charles wrote:
In article ,
2987fr wrote:


"Jethro_uk" wrote in message
...
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

Not quite as specialist, but cropped up in chat a few days ago, is when
did Centigrade become Celcius in the UK ? Because we sure as hell used
centigrade at school.

(also when did Peking change it's name ? And Bombay ?

When lazy colonists showed up originally, and
back to the original when they went home.

And when did "Islamic" become "Islamist" ? )

And when did airfield become airport.

when the used concrete instead of grass for the runways

Most use tarmac. Only wartime runways used concrete.
(No joints)

Custos Custodum wrote:

On Sat, 2 Feb 2019 00:25:47 +0000, (Roger Hayter)
wrote:

NY wrote:

"Roger Hayter" wrote in message
...
Light frequencies, and especially infrared, are often still described as
a wavelength in nanometres.

Whereas at one time they were quoted in Angstroms - when 1 ? is 0.1 nm or
100 pm.

I remember them! I came across them regarding X-rays, I don't know if
they are still used in that field.

X-rays and gamma rays are usually described in terms of their photon
energy (in electron volts). It yields more sensible numbers and in
most cases is the only property that can be readily measured.

I agree there is a lot to be said for using a property you can actually
measure, especially if referring to properties like dispersion, but
doesn't a photon energy imply a specific wavelength theoretically?

--

Roger Hayter

On Saturday, February 2, 2019 at 12:26:27 AM UTC, Roger Hayter wrote:
NY wrote:

"Roger Hayter" wrote in message
...
Light frequencies, and especially infrared, are often still described as
a wavelength in nanometres.

Whereas at one time they were quoted in Angstroms - when 1 ? is 0.1 nm or
100 pm.

I remember them! I came across them regarding X-rays, I don't know if
they are still used in that field.


--

Roger Hayter

In our lab at BP we quoted small wavelengths in nanometres.

On Sat, 02 Feb 2019 02:19:05 +0000, Bill Wright wrote:

On 01/02/2019 22:38, Bob Eager wrote:

Ah, I see. I was a founder member of the College. I ended up being its
Master for 10 years. That's a sort of executive position covering
student welfare (e.g. emergency counselling, fixiung problems),
discipline (fining students or chucking them out of their
accommodation!) and entertaining important guests. The Darwin family
used to come to our dinners, and I got to know them quite well. I still
see one of them fairly often.



I'm genuinely impressed.

Hard work. On call 24/7 weekdays, 1 in 4 weekends. Dead students at 3
a.m. Firts one was 3 weeks after I started.

I didn't realise how stressful it was until I stopped.

--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

In article ,
says...

In article ,
harry wrote:

On Friday, 1 February 2019 15:58:14 UTC, Bob Eager wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

The same film apparently has a plug being wired with brown/blue/gren-and-
yellow flex.

You often see modern light switches in period films.
Also roads with parallel ruts,ie no horse tracks in the middle.

Watching an episode of Foyle's War larse night. There was a wartime
(presumably prewar model) car that had two rear lights. I thought that
was only a postwar requirement.

It became compulsory from 1st October 1958. The firm of Duke &
Co in Romford Road, Manor Park dealt in a lot of surplus radio
equipment and obviously got his hands on a very large quantity
of red lights that just happened to match the minimum diameter
specified by the new law.

As well as his usual adverts in the wireless/TV enthusiast
magazines he even advertised these lights in the national
press. 6d each, from memory.

--

Terry

---
This email has been checked for viruses by AVG.
https://www.avg.com

On 02/02/2019 12:54, Terry Casey wrote:
In article ,
says...

In article ,
harry wrote:

On Friday, 1 February 2019 15:58:14 UTC, Bob Eager wrote:
On Thu, 31 Jan 2019 20:32:57 -0500, S Viemeister wrote:

Watching the Eddie Izzard film on the development of radar, I was
surprised that they used 'megahertz' rather than 'megacycle'. Was this
usage accurate for the period?

The same film apparently has a plug being wired with brown/blue/gren-and-
yellow flex.

You often see modern light switches in period films.
Also roads with parallel ruts,ie no horse tracks in the middle.

Watching an episode of Foyle's War larse night. There was a wartime
(presumably prewar model) car that had two rear lights. I thought that
was only a postwar requirement.

It became compulsory from 1st October 1958. The firm of Duke &
Co in Romford Road, Manor Park dealt in a lot of surplus radio
equipment and obviously got his hands on a very large quantity
of red lights that just happened to match the minimum diameter
specified by the new law.

People stuck them on the rear mudguards and wired them to the existing
single rear light (which also lit the number plate) so they had three
lights to the rear. I don't know whether cars had brake lights at the time.

--
Max Demian