here you go fedi.

[mab_813@fedi.at]

@kirakira

This reminds me of the big diapositive slides we had at the university, changing them in the dual slide projector was my first student job.

[lightbocks@union.place]

@mxchara @kirakira

Continuous. Scrolling. Lecture. Notes.

[mxchara@cyberpunk.lol]

@lightbocks @kirakira and then it was replaced by someone fumbling ineptly with a laptop, so they could show a PowerPoint slideshow that they were also distributing on a webpage so there wasn't any point in going to lecture at all. Technology has been so good for education! =D

[xgranade@wandering.shop]

@kirakira @SnoopJ Now I'm just remembering transparent calculators used with those things, lolz.

[snoopj@hachyderm.io]

@xgranade @kirakira whoa, I don't think I've seen one of those. That's pretty awesome though!

[oneiros@ruhr.social]

@kirakira
Donald Knuth is giving a presentation?
@xgranade

[xgranade@wandering.shop]

@SnoopJ @kirakira One example of:

https://www.reddit.com/r/mildlyinteresting/comments/1004zfc/see_through_calculator_for_use_on_an_overhead/

[epic_null@infosec.exchange]

@kirakira Oh man I remenber those!

Kinda miss em?

[mrbruno@mstdn.social]

@kirakira Hells yeah!

How about one out those crappy filmstrip projectors?

[emilycat@transfem.social]

@kirakira@furry.engineer I feel so old... lol

[okohll@hachyderm.io]

@mxchara @kirakira one thing I'll never forget is a lecturer spitting on the acetate before wiping it to clear

[retreival9096@hachyderm.io]

@kirakira actually remember getting my "slides" printed on plastic to use one of those for a presentation. That had to wait for spreadsheets and presentation software though ...

[damonhd@mastodon.social]

@Retreival9096 @kirakira I remember drawing slides with special felt-tips on acetates!

[margaretsefton@writing.exchange]

@kirakira That reminds me of dark classrooms and cutting up during presentations.

[wyatt_h_knott@mastodon.sdf.org]

@kirakira My HS art teacher in 1986: you can always just use an overhead projector to get your drawing onto a canvas.
Me, in 2026: "always"?

[subrealz@infosec.exchange]

@kirakira
There’s an awesome defcon talk, from this year I guess (you can get your hands on it on their YT) involving a guy (Cliff Stoll) who could very much be Rick from “Rick and Morty” - or maybe Emmet “doc” Brown, from return to the future - and one of those retro-thingy machines.
I’ve never seen a man operate one of those with such skills

[nusher@mastodon.scot]

@kirakira We used to do our tutorials on acetates, were loaned the pens and a single sheet that then got wiped and reused. Quicker and easier than PowerPoint.

[foxgirlriley@transfem.social]

@emilycat @kirakira@furry.engineer saaaame ​​ x3

[heidi@discuss.systems]

@kirakira

Peak post!

[knodel@mastodon.de]

@kirakira

A friend sabotaged these projectors by blocking the ventilation slits so that the halogen bulb inside overheated.

I still use one as a light source with a continuous spectrum. Hard to find these days.