Mark Noel’s Leeuwenhoek

[Michael GilliganParticipant @michaelgilligan61133]

A fascinating article in the current issue of ME&W … thank you, Mark

My only frustration was the inability to copy & paste the links to the references, when viewing the digital edition !

This one, I consider essential reading, and it’s freely downloadable in PDF

https://www.science.org/doi/10.1126/sciadv.abf2402

MichaelG.

[John HaineParticipant @johnhaine32865]

Michael, I’m puzzled, which article, is it the November issue?

[Thor 🇳🇴Participant @thor]

Hi John,

It is in the December issue (#4771). @Michael, thanks for an interesting link.

Thor

[John HaineParticipant @johnhaine32865]

Aha! So not the latest issue according to this website then?

[John Haine]

On John Haine Said:

Michael, I’m puzzled, which article, is it the November issue?

Hoist by mine own petard !

Sorry, I thought “current issue” would suffice

MichaelG.

[noel shelleyParticipant @noelshelley55608]

The current issue is time dependant ? Noel.

[noel shelley]

On noel shelley Said:

The current issue is time dependant ? Noel.

Quite so !

and my post was date stamped … which made my statement correct, and equally valid when quoted.

Since time immemorial, Magazine publishers have issued prior to the calendar date printed on the cover … so as to maximise shelf-life.

Please don’t blame me for the ineptitude of the web-page manager.

MichaelG.

[old martParticipant @oldmart]

I had a read through it yesterday and now that the method of manufacturing the high power lens is known, I expect that many interested people will be trying their hand at making their own microscope. I had no idea that a single lens could have such high magnification.

I had no difficulty getting the first link to work.

[John HaineParticipant @johnhaine32865]

I’ve now read the article as the latest issue is available through my library. As many of us will have blowtorches I wonder how would one go about making a glass lens?

[Robert Atkinson 2Participant @robertatkinson2]

At about 9 or 10 years old I made a microscope from a design in a book. The stage was made from threaded pipe fittings with a light inside and also provided focus. The lens was globule type, the broken off end from a lens end torch bulb. It worked quite well as I recall.

Robert.

[John HaineParticipant @johnhaine32865]

It seems that making a glass drop lens is as easy as heating a glass rod until a portion of it is soft, pulling the end apart to form a thread, breaking the thread when cool, then carefully melting the end of the thread in a flame so it forms a spherical bead (presumably holding it vertical).  Then when cooled the thread is broken off from the bead and the remaining “stalk” used to align the bead in the ‘scope frame.

[Mark NoelParticipant @marknoel89254]

Thank you Michael for your kind comments. Such words encourage me to continue writing for ME&W.

[Michael GilliganParticipant @michaelgilligan61133]

Please do, Mark

MichaelG.

[Nigel Graham 2Participant @nigelgraham2]

Yes – I found it very interesting!

[Author]

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