Question of the day

spkennyuk · May 15, 2015

I confess i watch too many QI episodes. Although the loudest sound ever recorded underwater they still don't know what caused it.

Chrisbassett · May 15, 2015

Snapping shrimp! Good one, SP!

I know of them thanks to kids TV with the nipper - not quite QI

spkennyuk · May 15, 2015

hodroyd said:
Well Bu99er me, I never knew that..!!

I would rather not if you don't mind !

drewf · May 15, 2015

Trouble is mate - it's the kind of **** I do know, vaguely interesting for a second or so, but totally useless.

spkennyuk · May 15, 2015

Which event made it necessary for the scarecrow to be invented and why ?

Contigo · May 15, 2015

That has made my day, the fact the a shrimp click can generate a bubble which went burst can generate temperatures as hot as the suns surface!!!

drewf · May 15, 2015

Contigo said:
That has made my day, the fact the a shrimp click can generate a bubble which went burst can generate temperatures as hot as the suns surface!!!

My work is done

Don't blame me when you wake up in the middle of the night worrying about it...

BennyD · May 15, 2015

Going back to the fly and the train train of thought; in a single cylinder engine at precisely top-dead-centre the piston comes to a stop, does the crank?

drewf · May 15, 2015

spkennyuk said:
Which event made it necessary for the scare crow to be invented and why ?

Would it be mechanisation, ie tractors, as they could plough and sow a large enough area in one go?

drewf · May 15, 2015

BennyD said:
Going back to the fly and the train train of thought; in a single cylinder engine at precisely top-dead-centre the piston comes to a stop, does the crank?

In that vector, yes. In rotational terms, which is its reason for being there, no.

Where is the fly in this, btw?

daverichardson · May 15, 2015

Potential French invasion via Ireland

spkennyuk · May 15, 2015

No. scarecrows date back longer than you may think.

drewf · May 15, 2015

Well, I assume then that since birds pre-date humans, there would have been a need for some sort of bird-scarer as soon as humans moved away from gathering berries etc and started farming. That's quite a while ago...

BennyD · May 15, 2015

drewf said:
In that vector, yes. In rotational terms, which is its reason for being there, no.

Where is the fly in this, btw?

The piston. It has to decelerate, stop and accelerate in a different direction, like the fly, but the crank (train) doesn't, at any point, stop.

allandwf · May 15, 2015

BennyD said:
The piston. It has to decelerate, stop and accelerate in a different direction, like the fly, but the crank (train) doesn't, at any point, stop.

Jeff Goldblum would sort it once and for all!

CatmanV2 · May 15, 2015

BennyD said:
The piston. It has to decelerate, stop and accelerate in a different direction, like the fly, but the crank (train) doesn't, at any point, stop.

It does in the vector of up and down. It doesn't at any other, so effectively its up and down is translated to side to side.

90 degrees later the opposite is true. The same point of the crank will e at its maximum velocity in the vertical vector, but it's horizontal vector will be zero.

Really it never stops. Again, you can simply observe this.

C

spkennyuk · May 15, 2015

drewf said:
Well, I assume then that since birds pre-date humans, there would have been a need for some sort of bird-scarer as soon as humans moved away from gathering berries etc and started farming. That's quite a while ago...

I meant in terms of pre mechanisation. Something else was used before scarecrows but as they say necessity is the mother of invention.

CatmanV2 · May 15, 2015

spkennyuk said:
I meant in terms of pre mechanisation. Something else was used before scare crows but as they say necessity is the mother of invention.

Well the Japanese have used bamboo and water to scare birds for a long old time

C

drewf · May 15, 2015

No slaves allowed?

spkennyuk · May 15, 2015

CatmanV2 said:
Well the Japanese have used bamboo and water to scare birds for a long old time

C

I'm going to have to clarify the question a little. Your right version of scarecrows have been around since ancient Egyptian times. The question should really be :-

Scarecrows as we known them in this country today were invented as a result of a specific event. What was that event and what were we using before ?

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