Huh, that's weird...<p>I found these weird "upcicles" growing out of chain link fence posts near Lechmere in <a href="https://cybersecurity.theater/tags/CambridgeMA" class="mention hashtag" rel="tag">#<span>CambridgeMA</span></a>! I've seen them a few times, and they're *super funky*.</p><p>How the heck do these form? Are they in fact a large version of the ice spikes that sometimes form on ice cubes?</p><p>See thread for more details.</p><p>Unfiltered gallery: <a href="https://gallery.brainonfire.net/v2/list?tt=Location=Bike%20path%20along%20western%20Morgan%20Ave,%20Cambridge,%20MA&tt=Content=ice&tt=Content=mystery&mode=raw" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">gallery.brainonfire.net/v2/lis</span><span class="invisible">t?tt=Location=Bike%20path%20along%20western%20Morgan%20Ave,%20Cambridge,%20MA&tt=Content=ice&tt=Content=mystery&mode=raw</span></a></p><p><a href="https://cybersecurity.theater/tags/HuhThatsWeird" class="mention hashtag" rel="tag">#<span>HuhThatsWeird</span></a> <a href="https://cybersecurity.theater/tags/ice" class="mention hashtag" rel="tag">#<span>ice</span></a> <a href="https://cybersecurity.theater/tags/physics" class="mention hashtag" rel="tag">#<span>physics</span></a></p>
Recent searches
No recent searches
Search options
Only available when logged in.
cybersecurity.theater is one of the many independent Mastodon servers you can use to participate in the fediverse.
Taking the "Twitter" out of "InfoSec Twitter."
Administered by:
Server stats:
4active users
cybersecurity.theater: About · Profiles directory · Privacy policy
Mastodon: About · Get the app · Keyboard shortcuts · View source code · v4.3.4
#HuhThatsWeird
0 posts · 0 participants · 0 posts today
Huh, that's weird...<p>I was playing around with a diffraction grating (a child's toy, "rainbow glasses") and decided to look at some LEDs to see if I could tell how smooth or bumpy their spectral output was—I'd heard that cheaper white LEDs tend to have a sharp peak in the blue and a large, wide peak around green/red.</p><p>And that's what I saw: A dim region between blue and green. But it's also *narrower* there, which I didn't expect! Maybe there's some diffusion of the light transversely?</p><p><a href="https://cybersecurity.theater/tags/HuhThatsWeird" class="mention hashtag" rel="tag">#<span>HuhThatsWeird</span></a></p>
Huh, that's weird...<p>I want you to do an experiment, if you can.</p><p>Find a bright background (daytime sky, very brightly lit wall). Make a pinching motion right in front of your eye so you can just barely see the background past it—and focus your eye on the background.</p><p>Just as your fingers are a hairs-breadth apart... do you see a bridge of shadow between them?</p><p>- What does it look like?<br />- Does your camera see the same thing?<br />- Why the heck is it there?</p><p><a href="https://cybersecurity.theater/tags/HuhThatsWeird" class="mention hashtag" rel="tag">#<span>HuhThatsWeird</span></a></p>
Huh, that's weird...<p>🧠 That bike that passed us, playing music on a speaker—the pitch went from high to low! Doppler effect!<br />🧑🔬 Yeah, very good, self! Good noticing.<br />🧠 And when you slow music down, the pitch gets lower.<br />🧑🔬 Sure... where are you going with this?<br />🧠 Red shift from stars is Doppler shift too and it's from time dilation! Bikes must move at a significant fraction of light speed!<br />🧑🔬 why do you do this</p><p>----</p><p>I *know* it's wrong, but now I need to go on a Wikipedia binge to figure out why. >_<</p><p><a href="https://cybersecurity.theater/tags/HuhThatsWeird" class="mention hashtag" rel="tag">#<span>HuhThatsWeird</span></a></p>
Huh, that's weird...<p>Somehow the stove can turn my kitchen scale on!</p><p>I had the scale powered off and sitting to one side, and when I turned on a different burner, the scale powered on. Is this inductive coupling?</p><p>(All the burners spark at the same, so it doesn't matter which knob I turn.)</p><p>What's even weirder is that this morning I *couldn't* reproduce it after cleaning the stove. It only worked again just now. Maybe it had to dry out.</p><p><a href="https://cybersecurity.theater/tags/HuhThatsWeird" class="mention hashtag" rel="tag">#<span>HuhThatsWeird</span></a> <a href="https://cybersecurity.theater/tags/physics" class="mention hashtag" rel="tag">#<span>physics</span></a> <a href="https://cybersecurity.theater/tags/electronics" class="mention hashtag" rel="tag">#<span>electronics</span></a></p>
Huh, that's weird...<p>When I press on this fidget spinner, the noise gets louder and higher pitched. But when I drag it across the surface, the opposite happens.</p><p>Seems to happen on any resonant surface, like a wooden desk top or (here) the lid of a washing machine.</p><p>Why does the sound change?</p><p>(May require headphones, but turn the volume down first!)</p><p><a href="https://cybersecurity.theater/tags/HuhThatsWeird" class="mention hashtag" rel="tag">#<span>HuhThatsWeird</span></a> <a href="https://cybersecurity.theater/tags/physics" class="mention hashtag" rel="tag">#<span>physics</span></a></p>
ExploreLive feeds
Mastodon is the best way to keep up with what's happening.
Follow anyone across the fediverse and see it all in chronological order. No algorithms, ads, or clickbait in sight.
Create accountLoginDrag & drop to upload