L&L Scribble June 2024

[Rik]

It's all in the back......

Excellent, as usual.
Love it.


Sincere apologies for the late comment.
Been a bit busy!

[ernie-f]

Just before the end, here is my contribution to the June scribble.

[handrawn]

oh my fur and whiskers, where does the time go...!

meow

[Jonopen]

Just before the end, here is my contribution to the June scribble.

That's excellent Ernie - looks expensive!

[Jonopen]

oh my fur and whiskers, where does the time go...!

meow

I've been studying this for a few minutes. Intriguing! - Is it some kind of trap with bait? And is that a camera and microphone? I'm sure I'm wrong on both counts.

[handrawn]

quite correct jono, wrong on both counts

meow

[Jonopen]

Meow is a clue! Is it an intelligence test for cats?

I even did a quick google!

[Luciano]

I believe it is a "galena cat whisker detector", an ancient sort of diode. The whisker gently touches the rough surface of galena crystal to detect simple AM radio signal.
Meow
Of corse the whisker here is a thin wire...
Here are 2 pictures from wikipedia

[Jonopen]

Thanks Luciano. It’s now crystal clear! I had heard of such a device but never actually seen one.

[handrawn]

I believe it is a "galena cat whisker detector".....

indeed

we were taught about these at school, along with those new fangled things called 'transistors'...

I still prefer valves [tubes]