Things you always wanted to know the answer to [Vol. 3]

[Einion Yrth]

Moonhawk said:

Initial experiments in holography used electron beams - not laser light. It was only after lasers were invented that it was found they were suitable for applying into the existing field of holography.

Gabor tried mercury arc lights for optical holography but could not get both the brightness and coherency needed. The man knew what was required and it was plain from their invention that laser light was coherent and thus suitable for optical holography.

[gwm]

P-Jay said:

marshalla said:

Safety feature = avoids the accident.
Survival feature = human still breathing after the accident.

Which are we really talking about ?

Survival feature if you like then - crumble zone, air bags, etc.

Sounds tasty...

[Cliftonite]

Why has Tesco stopped stocking Schweppes Original lemonade in 1.5 litre plastic bottles? There was none in my local (Southeast) Sainsbury's either, on my last visit.

[MissChief]

Unless someone on here works for a. Schweppes, or b. is a buyer for Tesco, how would we know?

[Cliftonite]

MissChief said:

Unless someone on here works for a. Schweppes, or b. is a buyer for Tesco, how would we know?

This is PH. There is always someone on here who knows the answer to any question!

That is why this thread has been successful in reaching Volume 3 !!!

[RDMcG]

deeen said:

singlecoil said:

On the subject of American building practices... And why are their roofs such shallow pitches, is it so that people can walk on them when they have to replaces their shingles so frequently?

My guess is no snow?

Houses vary by region very greatly.
Thus houses in Vermont generally have steeply pitched roofs because of the snow load, while those in the Arizona desert are generally flat roofed. Building materials also very by region.

[Crusoe]

Cliftonite said:

MissChief said:

Unless someone on here works for a. Schweppes, or b. is a buyer for Tesco, how would we know?

This is PH. There is always someone on here who knows the answer to any question!

That is why this thread has been successful in reaching Volume 3 !!!

They are having a clash over RRP prices with coca-cola
http://www.telegraph.co.uk/finance/newsbysector/re...

[neelyp]

For my sins I was looking at the McDonald's website today and was looking at the Grilled Chicken Salad Wrap, I noticed that for some reason the recipe of the chicken used in Yorkshire is different from anywhere else.
Taken from the site
ALL RESTAURANTS EXCEPT YORKSHIRE: Chicken Breast Meat, Sunflower Oil, Potato Starch, Natural Flavourings, Stabiliser (Processed Eucheuma Seaweed), Salt.
FOR YORKSHIRE RESTAURANTS ONLY: Chicken Breast Meat (Made with 104g meat per 100g finished product), Starch, Rapeseed Oil, Flavouring (contains WHEAT), Sugar, Salt, Yeast Extract, Maltodextrin, Onion, Spice, Garlic, Spice Extract, Rosemary Extract.
N.B. May contain traces of egg, milk, celery and mustard.

Why would this be?
What's so fking special about people from Yorkshire?

[Crusoe]

Simple answer

McDonalds said:

In the Yorkshire area we are serving a different grilled chicken, in our Grilled Chicken Salads and Grilled Chicken Deli Sandwiches and Wraps, to test a new recipe.

[scarble]

Crusoe said:

They are having a clash over RRP prices with coca-cola
http://www.telegraph.co.uk/finance/newsbysector/re...

He knows the answer!

[singlecoil]

Why does eating asparagus make my urine smell strange?

[Hugo a Gogo]

singlecoil said:

Why does eating asparagus make my urine smell strange?

only some people have that effect when they eat it
only some people can smell it
not necessarily the same people
it's weird

[iambeowulf]

Hugo a Gogo said:

singlecoil said:

Why does eating asparagus make my urine smell strange?

only some people have that effect when they eat it
only some people can smell it
not necessarily the same people
it's weird

How do you know that everyone has smelly wee but simply some people can't smell it so assume when asked that it doesn't effect them?

I've never smelt anyone else's wee, as in a fresh batch not just piss stained bogs and doorways.

[Hugo a Gogo]

scientists, they did studies n that

I read about it once

[V40TC]

Why have Rennies in Fruit flavours disappeared ?

can't get them anywhere

Mind you
stopped eating bread and chronic Indigestion stopped too.


but for the odd Curry/kebab I liked fruit flavoured rennies

[SpeckledJim]

Hugo a Gogo said:

scientists, they did studies n that

I read about it once

So did I - I think it's true.

[gwm]

Those long trains carrying pressure tanks (pic below) - every 2nd or 3rd tank is invariably dented. How does this happen and if these ARE pressure vessels, why isn't it a concern?

[Willy Nilly]

gwm said:

Those long trains carrying pressure tanks (pic below) - every 2nd or 3rd tank is invariably dented. How does this happen and if these ARE pressure vessels, why isn't it a concern?

I think they are just tanks and would doubt a pressure vessel would be put in service with a dent in it.

[GokTweed]

Why are car companies still building cars with steel when aluminium is easier to work with nowadays and readily available, not to mention the strength and weight benefits etc?

I get why they wouldn't on a cheap model because it's a more expensive technology, but for their big family barges etc. to help reduce weight and economy? Shirley it's an easy fix to get the mpg's up by making the car lighter?

[rohrl]

GokTweed said:

Why are car companies still building cars with steel when aluminium is easier to work with nowadays and readily available, not to mention the strength and weight benefits etc?

I get why they wouldn't on a cheap model because it's a more expensive technology, but for their big family barges etc. to help reduce weight and economy? Shirley it's an easy fix to get the mpg's up by making the car lighter?

The bodywork isn't as big as a percentage of the car's weight as you'd think (you still have the same glass, interior, suspension, wheels, engine, transmission, electrics etc.) and thus the weight saving from building in aluminium isn't that great.