Quiz.

[Bodd]

oh, you've added "mainland"

after I'd given the right answer

that's cheating.

I meant the Lizard

Your go

 

[JohnD]

Prior to the reign of Queen Elizabeth I, English silver was a "noble metal" that stayed bright and shiny.

Today, silver objects need a lot of polishing to keep tarnish at bay.

Why?

 

[crystal ball]

Old silver was pure and todays is alloyed with something

 

[JohnD]

ha!

An easy mistake to make, but, sadly, wrong.

 

[Ihavenojob]

Air pollution

 

[JohnD]

Correct

And what started happening during the reign of QE1 and subsequently accelerated?

 

[Ihavenojob]

In an engine, what happens at 5252 RPM ?

 

[Ihavenojob]

And what started happening during the reign of QE1 and subsequently accelerated?

Burning fossil fuels ?

 

[JohnD]

Yes, coal started being shipped to London, putting sulphur dioxide into the atmosphere, which causes black tarnish on silver.

Englands forests were being destroyed for shipbuilding.

 

[troutybrown]

Yes, coal started being shipped to London. Englands forests were being destroyed for shipbuilding.

Was that the start of steam power

 

[JohnD]

Was that the start of steam power

nope

QE1 reigned from 1558 to 1603. Long before steam. Coal was starting to be used in iron work and other industry, it burns hotter than wood, and charcoal was running short.

 

[Bodd]

In an engine, what happens at 5252 RPM ?

It produces Vapour?

 

[Ihavenojob]

It produces Vapour?

No

 

[Bodd]

Sonic boom

 

[Ihavenojob]

Sonic boom

No, surprised Mottie hasn't answered.