Things you always wanted to know the answer to [Vol. 2]

[Ayahuasca]

When aircraft are repainted is the old paint stripped off first, or just covered by the new paint?

[TwigtheWonderkid]

Why don't we eat Canada geese? We're constantly told they are a nuisance, there are millions of the things and they look quite plump and tasty.

[lord trumpton]

Part 1 - So, you know at the entrance to supermarkets; where they usually have a full length strip of double yellow lines? Why the fock do people think it's still OK to park there instead of one of the many parking spaces?

I'm thinking they are there to limit the risk of people stepping out from in between said cars into oncoming traffic.

Part 2 - Why are said cars usually Range Rovers, Focus ST's and fagged out people carriers driven by fat birds with crap tats?

[Hugo a Gogo]

Ayahuasca said:

When aircraft are repainted is the old paint stripped off first, or just covered by the new paint?

stripped and repainted

https://www.youtube.com/watch?v=qqZKpCJEqNE#t=52

all the paint on a jumbo could be 500-800kg

[Dyl]

Postcodes. I know the first half is relevant to the sorting office and area you live in, but does the second half have any meaning or is it randomly generated?

[Willy Nilly]

Does metal made from ore get used for different things to metal made from recycled scrap?

[MissChief]

Dyl said:

Postcodes. I know the first half is relevant to the sorting office and area you live in, but does the second half have any meaning or is it randomly generated?

Usually they're specific to the street or part of a street. So large blocks of flats may also have their own unique postcode. As far as I know they're not completely random but I'm not sure if they're generated procedurally or not.

[Shaolin]

MissChief said:

Usually they're specific to the street or part of a street. So large blocks of flats may also have their own unique postcode. As far as I know they're not completely random but I'm not sure if they're generated procedurally or not.

I've just googled mine, the last bit is 6RF. 6RG is at the end of 6RF, then 6RH after that, no 6RI, but then 6TJ, then I got bored. Also if you just google the last bit you'll get places all over the country with the same.

[Carthage]

For horse drugs (even simple wormers), we calculate the amount per kg body weight.

Why do we not do that for all human drugs, given human body weight varies as much?

[jimmyjimjim]

I've wondered that, too. I think for some, mainly the more entertaining painkillers, the strategy is to use weight based dosage(which apparently has its own issues), but it does seem that fixed dosage is the norm.

There has to be a lot of wastage doing it this way.

[texaxile]

Sorry if already been asked,

Why are Channels 100 and 500 on SKY not used?.

[lord trumpton]

Do insects feel pain?

[GTIR]

lord trumpton said:

Do insects feel pain?

Let's ask Max Clifford in about 8 years.

[CraigyMc]

GTIR said:

lord trumpton said:

Do insects feel pain?

Let's ask Max Clifford in about 8 years.

He'll be out in 4, and he'll spend his time in the nonce wing anyway.

[King Herald]

If 7/11 stores are indeed open 24/7, 365 days a year, why do they have a lock on the front door?

[Willy Nilly]

King Herald said:

If 7/11 stores are indeed open 24/7, 365 days a year, why do they have a lock on the front door?

Aren't 7-11 stores open from 7am until 11pm?

[H22observer]

London postcodes - We have N, E, SE, SW, W, NW & N.

Why no S or NE postcodes?

[Justayellowbadge]

Wiki says:

The NE and S divisions were abolished following a report by Anthony Trollope: in 1866 NE was merged into the E district, the large districts transferred included Walthamstow,[5] Wanstead and Leytonstone.[6] The remaining eight letter prefixes (excluding all numbers) have not changed.[7]

At the same time, the London postal district boundary was retracted in the east, removing places such as (Great) Ilford for good.[8][1]

In 1868 the S district was split between SE and SW.[1]

The NE and S codes have been re-used in the national postcode system and now refer to the NE postcode area around Newcastle upon Tyne and the S postcode area around Sheffield.[7]

[MissChief]

texaxile said:

Sorry if already been asked,

Why are Channels 100 and 500 on SKY not used?.

I have no idea but will ask someone who may know on Monday.

[FiF]

Willy Nilly said:

Does metal made from ore get used for different things to metal made from recycled scrap?

Well yes it does.

This is because the processes lend themselves to different quantities and alloying additions. The smelting of ore into cast iron or the production of molten iron into mild steel is a very high volume process. You can also make alloying additions to produce other alloyed steel specifications but again because of the economy of scale and the massive quantities produced this means that the steel is used for products where large tonnages of the steel grade are needed, eg car body panels.

The processes which start from scrap are more expensive and are thus used for more highly alloyed steels which are not required in such vast tonnages. Even though the furnaces may be hundred tonnes per melt and more is to most of us a lot of steel it's really small stuff in the overall scheme of things.

This makes it more expensive but it is more flexible in terms of different compositional changes from heat to heat within reason. For example you don't follow a medium alloy engineering steel say a 1% Cr 0.5% Mo steel with an austenitic stainless but you could follow it with a 2-1/4Cr Moly for example.

Such steels are generally used for different applications from the high volume low alloyed steels from ore melting.