Science in Secondary Schools

[EternalOptimist]

Er, isn't that an Engineering Degree?

GCSE was brought in as a combination of the GCE O Level and the CSE.

In my day (long long long ago), GCE grades went from 1 to 9, with anything lower than 6 regarded as a fail... this was altered to 1&2 = A, 3&4 = B, 5&6 = C...

A pass at CSE was regarded as equivalent to grade 6 at GCE.

How things have changed.

I see the results of the change every day in my esteemed customers...

I think she means science as opposed to an Arts degree

[EternalOptimist]

Oh.

Ok then...

Dont mean to bore you, but
pull up a stool and I'll tell you about cathode 'bounce'

[Pogle]

Er, isn't that an Engineering Degree?

GCSE was brought in as a combination of the GCE O Level and the CSE.

In my day (long long long ago), GCE grades went from 1 to 9, with anything lower than 6 regarded as a fail... this was altered to 1&2 = A, 3&4 = B, 5&6 = C...

A pass at CSE was regarded as equivalent to grade 6 at GCE.

How things have changed.

I see the results of the change every day in my esteemed customers...

Nope its a BSc (Hons) . It was 'fun' electronics all about imagining and communication technology.

[BrowneIssue]

Dont mean to bore you, but
pull up a stool and I'll tell you about cathode 'bounce'

Pah! Everyone knows that.

It's one of those principles, thingies, you were talking about. Like once you know them you can deduce the world.

IIRC there was a problem in amplifiers and the cause was that the electrons moved through the vacuum, hit the cathode but then bounced off before being reattracted. This proved that these things had mass. i.e. it's a physical bounce rather than a magnetic type one.

Interesting if you do a degree in ancient electronics, otherwise, useless, totally useless.



IIRC

[Pogle]

Pah! Everyone knows that.

It's one of those principles, thingies, you were talking about. Like once you know them you can deduce the world.

IIRC there was a problem in amplifiers and the cause was that the electrons moved through the vacuum, hit the cathode but then bounced off before being reattracted. This proved that these things had mass. i.e. it's a physical bounce rather than a magnetic type one.

Interesting if you do a degree in ancient electronics, otherwise, useless, totally useless.



IIRC

If that's the case then about 97% of what I have in my head is useless, but I wouldn't be without it. I don't think knowledge can ever be described as useless

go on someone prove me wrong - you know you want to

[EternalOptimist]

Pah! Everyone knows that.

It's one of those principles, thingies, you were talking about. Like once you know them you can deduce the world.

IIRC there was a problem in amplifiers and the cause was that the electrons moved through the vacuum, hit the cathode but then bounced off before being reattracted. This proved that these things had mass. i.e. it's a physical bounce rather than a magnetic type one.

Interesting if you do a degree in ancient electronics, otherwise, useless, totally useless.



IIRC

spoilsport.

I was dying to bore him again.

[BrowneIssue]

Resurrected from a different thread (the thread from which I stole EteralOptimist's explanation of 'cathode bounce'):

Even when I was doing my first attempt at a degree, vacuum state electronics wasn't on the curriculum.

Though we did do weird things like crts using magnetic & electrostatic deflection as I recall. Electron ballistics, that's what it was called.

No one younger than about 45 has ever heard of any of it.

Also did stuff about magnetic amplifiers which are even more obscure, despite being used in 99% of PC psus.

We did that in my A Level Physics. According to my birth certificate, I'm 44.

We had lots of fun deflecting electrons against phosphor screens, gold leaf electroscopes and little spinny fan things in a vacuum. We defracted them through gratings too.

I think we worked out the charge on an electron from the deflection caused by an electromagnet.

What did I do with this knowledge? Trash our first colour telly on the day it was delivered by deflecting the electron beams with a big magnet.

[EternalOptimist]

If that's the case then about 97% of what I have in my head is useless, but I wouldn't be without it. I don't think knowledge can ever be described as useless

go on someone prove me wrong - you know you want to

ok.
Imagine a tall building. Drop a cat (or a guinea-pig) from the fifth floor. It hits the pavement then it 'bounces', this is called the 'dead cat bounce' and is one of the basic principles of economics and economic journalism. Now imagine that the cats patron saint was St Jude, this proves the cat is RC and therefore has mass.
If the cat has mass it cannot have a frquency, and thereore it is a singularity, if it it single it has no offspring, which brings us onto relativity.

are you still there ?

[Menelaus]

ok.
Imagine a tall building. Drop a cat (or a guinea-pig) from the fifth floor. It hits the pavement then it 'bounces', this is called the 'dead cat bounce' and is one of the basic principles of economics and economic journalism. Now imagine that the cats patron saint was St Jude, this proves the cat is RC and therefore has mass.
If the cat has mass it cannot have a frquency, and thereore it is a singularity, if it it single it has no offspring, which brings us onto relativity.

are you still there ?

WTF?!

All science, in the final analysis, is mathematics.

[Mich the Tester]

ok.
Imagine a tall building. Drop a cat (or a guinea-pig) from the fifth floor. It hits the pavement then it 'bounces', this is called the 'dead cat bounce' and is one of the basic principles of economics and economic journalism. Now imagine that the cats patron saint was St Jude, this proves the cat is RC and therefore has mass.
If the cat has mass it cannot have a frquency, and thereore it is a singularity, if it it single it has no offspring, which brings us onto relativity.

are you still there ?

If you drop a cat or a guinea pig from the fifth floor it probably won’t die as it’s terminal velocity is much lower than that of a human and insufficient to kill it as long as it lands on its legs. It may well have sore legs for a while though, and I’m not suggesting people throw cats or guinea pigs out of windows. Save that treatment for uppity project managers and agents.