Two appliances in one plug

JohnW2 · 29 Jun 2011

sparkticus said:
JohnW2 said:

... however, I fear this counts as rather severe thread drift

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Yes, I will reluctantly drop this subject now before I am "sieved out" by a phenotype filter

Probably wise - although I'm not sure that it is any more 'off-topic' that a lot of what one sees here! You can always PM me if you want!

Kind Regards, John

echoes · 29 Jun 2011

JohnW2 said:
echoes said:

FeO (which I call ferrous oxide) is now Iron-2-oxide
Fe2O3 (which I call ferric oxide) is now Iron-3-oxide

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Is it not Iron II oxide / Iron III oxide, or have they changed to Arabic from the Roman numerals? I am genuinely not being pedantic or flippant!

Click to expand...

Oh, you may well be right. I only discovered the chage when trying to help my daughters with GCSE Science, about 15 years ago, and haven't really thought about it much since.

Hang on ... I'll ask Mr Google .... Yes, you're almost right ... it seems to be:

Iron (II) oxide and Iron (III) oxide

... but I got the idea right!

Kind Regards, John

Thank god for that! However it's slow to catch on - all this stuff is still packaged as Sodium Bicarbonate, Ferric Chloride, Ferrous Sulphate, Acetic Acid etc and not the not-so-new fangled Sodium Hydrogen Carbonate, Iron (III) Chloride etc etc. I was learning the 'new' valence notation nearly 30 years ago.
I hope 'they' don't rename Aqua Regia - whoever coined that one deserves some credit.

JohnW2 · 29 Jun 2011

echoes said:
Thank god for that! However it's slow to catch on - all this stuff is still packaged as Sodium Bicarbonate, Ferric Chloride, Ferrous Sulphate, Acetic Acid etc and not the not-so-new fangled Sodium Hydrogen Carbonate, Iron (III) Chloride etc etc.

Well, I agree that a lot still seem to bear old-style packaging, but .....

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JohnW2
29 Jun 2011
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JohnW2
29 Jun 2011
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echoes said:
I was learning the 'new' valence notation nearly 30 years ago.

I did A-Level Chemistry more years ago than I care to remember (1966, which I fear was 45 years ago!) and there was certainly no hint of the new terminology then.

Kind Regards, John

Stoday · 29 Jun 2011

In WW2, before ring circuits, my grandmother referred to the two sockets in the house as "electric plugs".

These comprised a surface mounted switch with two holes on top. The plug top plugged into the top of the electric plug.
.

stubob · 29 Jun 2011

Stoday said:
In WW2, before ring circuits, my grandmother referred to the two sockets in the house as "electric plugs".

These comprised a surface mounted switch with two holes on top. The plug top plugged into the top of the electric plug.
.

Amen

SUNRAY · 29 Jun 2011

Stoday said:
In WW2, before ring circuits, my grandmother referred to the two sockets in the house as "electric plugs".

These comprised a surface mounted switch with two holes on top. The plug top plugged into the top of the electric plug.
.

Lovely devices, beautifully cast with a ceramic based material and a bakelite or brass front to cover the connexions and available in at least 7 formats.

I used to do some work in a local theatre and up until the last 5 years or so there were 6 of the 15A version, each wired with large rubber T&E [7/0.036 or 7/0.044] and 30A breakers [180A total]. These were the supply to the lighting dimmers and regularly ran at 6KW for the duration of a show, I guess they were installed in the 50's [most likely 15A fuses initially] and had therefore given 50 years of trouble free service. They were only removed as new dimmer packs were installed.

They don't make 'm like they used to

ban-all-sheds · 29 Jun 2011

echoes said:
They'll be changing Finisterre to Fitzroy, Jif to Cif next. And what's all this 'new pence' about? Why can't they just leave things alone? I will be writing a strongly worded letter to Mr Wilson.

Will you also ask him about Marathon bars, Spangles and Opal Fruits, please?

ban-all-sheds · 29 Jun 2011

JohnW2 said:
NaHCO3 (which I call sodium bicarbonate - which admittedly was always a bit of a misnomer) is now Sodium Hydrogen Carbonate

The tub in my kitchen cupboard says "Bicarbonate Of Soda" on it. It's usually to be found close by the tub of potassium hydrogen tartrate.

ban-all-sheds · 29 Jun 2011

sparkticus said:
Even a cadaver seemed to be more than the sum of its parts. I'm still trying to rationalise that point which seems more than philosophical to me.

Have they set a date for the trial yet?

JohnW2 · 29 Jun 2011

ban-all-sheds said:
Will you also ask him about Marathon bars, Spangles and Opal Fruits, please?

IIRC, Marthon bars have now actually seen the light, and reverted (or will be reverting) to the proper name!

Kind Regards, John.

JohnW2 · 29 Jun 2011

ban-all-sheds said:
The tub in my kitchen cupboard says "Bicarbonate Of Soda" on it. It's usually to be found close by the tub of potassium hydrogen tartrate.

Indeed - we seem to have a 'hybrid' situation at present.

I remember that the bicarb caused some confusion to my daughters in those GCSE days. It seems that they were taught that "Bicarbonate of Soda" was the 'archaic' name for sodium hydrogen carbonate, in much the same was as we were taught similarly about, say, 'Oil of Vitriol' (sulphuric acid)!!

Kind Regards, John.

JohnW2 · 29 Jun 2011

Stoday said:
In WW2, before ring circuits, my grandmother referred to the two sockets in the house as "electric plugs". These comprised a surface mounted switch with two holes on top.

Yep, I remember them. I may even still have one or two hidden away in a dusty corner of my cellar!

Stoday said:
The plug top plugged into the top of the electric plug.

Tempting though it may be, I don't think one can blame 'plugtop' on that, since the word didn't (AFAIK) appear until a lot later.

Kind Regards, John

Risteard · 29 Jun 2011

Paul_C said:
And I think we see a similar thing happening with electrical committees with things like RCCB becoming RCD. A pointless change.

RCCB didn't become RCD. An RCCB is one type of RCD. Others include the likes of RCBOs, SRCDs, PRCDs etc.

JohnW2 · 29 Jun 2011

Risteard said:
RCCB didn't become RCD. An RCCB is one type of RCD. Others include the likes of RCBOs, SRCDs, PRCDs etc.

That's all true, but isn't Paul's point probably that there has been an unnecessary and apparently retrograde change, at least in common usage? Instead of calling an RCCB and RCCB, most people now call it by the family name, RCD - which, as you say, defines what one is talking about less precisely.

Kind Regards, John.

Paul_C · 30 Jun 2011

Risteard said:
Others include the likes of RCBOs, SRCDs, PRCDs etc.

All of which incorporate an RCCB, just in various forms. But even RCCB is a relatively recent term for what for decades was known as a current-operated ELCB.

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Two appliances in one plug

Paul_C

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