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Lightsmith

@slepkov.bsky.social

Physics prof at the largest small university in Ontario, Canada. Ultrafast lasers, microscopy, microwave photonics, physics education, multiple-choice assessment. Funny is good. A pervert for nuance.

567 Followers  |  81 Following  |  106 Posts  |  Joined: 06.10.2023  |  2.1023

Latest posts by slepkov.bsky.social on Bluesky

Uncurious or incurious? Damn, now I've got to look it up! πŸ˜‰

10.11.2025 22:53 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Will the NYT please use a science dictionary?! This is getting ridiculous.

21.10.2025 12:37 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Unveiling ignis fatuus: Microlightning between microbubbles | PNAS Will-o’-the-wisps, ghostly blue flames seen at night in marshlands and long attributed to methane cool flames, have remained scientifically unexpla...

Fun stuff here in PNAS.
Static electric 'microlightning' in micro water bubbles may be the long-sought ignition mechanism for mashy will-o'-the-wisps...
www.pnas.org/doi/10.1073/...

30.09.2025 18:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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More common science words, please.

27.09.2025 13:29 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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What is going on with the NYT Spelling Bee. This is Canadian erasure.

25.09.2025 15:10 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Is it just me, or is the Spelling Bee particularly frustrating for scientists?

18.09.2025 12:26 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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a close up of a man 's face with the words we are so cooked below him ALT: a close up of a man 's face with the words we are so cooked below him

Is the youth cooked?

I just found my teen daughter's desk lamp in the recycling bin. When I asked her about it she said "It's broken. I didn't do anything to it! it Just stopped working!".
LED bulbs last so long that she didn't know about bulb replacement.

17.09.2025 00:46 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Happy Wordle-in-one day to me! πŸŽ‰
Time to find a new starter.

Wordle 1,538 1/6
🟩🟩🟩🟩🟩

04.09.2025 17:24 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Answer: Both are river scum.

01.09.2025 19:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Pine nuts and tomatoes?! that's fucken awesome!

23.08.2025 20:58 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

For a well-functioning partnership, rapid discontent can arise when the two 'decohere' temporarily; communication feels unusually viscous. This can manifest as 'mutual PMS', or not agreeing on where to eat (especially when travelling).

23.08.2025 20:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Not completing a chore on the spouse's preferred timeline

A sense of unacknowledged unequal distribution of labour

23.08.2025 20:51 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Our new paper asks (and answers) whether a shallow-learning approach (decision trees) can be as useful in (hyper)spectral analysis as advanced deep-learning methods.
tldr: Yes it can. Complex β‰  better.
doi.org/10.1088/2515... via @ioppublishing.bsky.social
#photonics

16.07.2025 16:01 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

this is the way

16.07.2025 15:59 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I'm struggling to parse the moral landscape on this one. If this gambit succeeds, who has the greatest moral failing: the authors, the reviewer, or the journal editors?

15.07.2025 15:46 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Polarization?

01.07.2025 22:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Let's play Jupiter or River Scum?

27.06.2025 01:03 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Pear Jam

20.05.2025 03:04 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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"Although fewer women apply for tenure-track jobs, those who do apply are more likely to be interviewed and more likely to get offered the job... These findings run directly counter to the claim that women are discriminated against in STEM hiring." www.stevestewartwilliams.com/p/rethinking...

13.05.2025 00:00 β€” πŸ‘ 4    πŸ” 5    πŸ’¬ 0    πŸ“Œ 1

Well, maybe it is weird that near-freezing water has a negative coefficient of thermal expansion, but once you accept that you shouldn't marvel that pressure liquifies ice.

Or am I weird by naturally connecting the two?!

12.05.2025 22:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

so, are you going to change your starter now?

11.05.2025 19:19 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Spring has now truly sprung at Trent U.
Does your campus have a riverside bench from which you might count new goslings?
@trentuniversity.bsky.social

09.05.2025 19:59 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

zoonotic?

02.04.2025 22:47 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

try ZOONTIC?

02.04.2025 22:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Excellent. In that case, a 6-7 completed task day would be an above average day for me.

But how I feel at the end each day has more to do with how many of those completed tasks were part of that day's plan.

21.03.2025 18:10 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Can you give an example of the lowest-level thoughtful task you might do in a day and count? Completing 6-7 tasks requiring thoughtful attention seems like a lot to me, but maybe I'm thinking of the wrong kinds of tasks.

21.03.2025 13:05 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

a knot of podcasts

21.03.2025 00:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

LOL low key admitting to listening to Honestly.... (as do I).

20.03.2025 22:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

So here is the Heiligenschein raytracing, where we see that retroreflection with a smooth reflectorshows a clear caustic and separation between red and blue! This will be washed out with randomness in reflected angles using a diffuse reflector. @johncnaylor.bsky.social

10.03.2025 18:39 β€” πŸ‘ 14    πŸ” 5    πŸ’¬ 1    πŸ“Œ 0

genuinely funny.

03.03.2025 19:25 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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