Scroll Slow. Have Fun • Hacker News Board

Re: Scroll Slow. Have Fun

#81

Post by mentos » Thu, Jan 08, 2015, 6:19 PM UTC

drivers99 wrote: post #35

Aardwolf wrote: post #5

This somehow manages my monitor to make a high pitched sound. It's an LCD monitor. It's the actual monitor making the sound. Switching to a different window or tab makes the sound top. Taking a screenshot of the tab, and closing the tab but viewing the screenshot, produces the sound.

"Some surface-mount capacitors exhibit acoustic noise when operated at frequencies in the audio range." [1] I see that this screen has alternating black and white lines. I count 43 black lines on my monitor. Assuming 60 Hz refresh rate, that is 2580 Hz in terms of the pixels being off or on, which is a perfectly audible frequency. Even with 120 Hz refresh rate, that would be 5160 which is still easily audible. Withou…

reminds me of how top gear was able to do similar with an F1 Engine https://www.youtube.com/watch?v=5BaR1Kc62Pk

Re: Scroll Slow. Have Fun

#82

Post by aruggirello » Thu, Jan 08, 2015, 6:23 PM UTC

Wow. This is definitely something that you should never look at if you suffer from epilepsy.

Re: Scroll Slow. Have Fun

#83

Post by r109 » Thu, Jan 08, 2015, 6:27 PM UTC

When I got to the bottom my monitor started melting down and up and I looked around the room to see if space time had truly been bent...

Re: Scroll Slow. Have Fun

#84

Post by aaronrenoir » Thu, Jan 08, 2015, 6:34 PM UTC

It's cool. I did something similar on my home page. http://catzo.com

Re: Scroll Slow. Have Fun

#85

Post by raimondious » Thu, Jan 08, 2015, 6:39 PM UTC

bjoveski wrote: post #10

poemotion by Takahiro Kurashima has many amazing examples of this type of art. A very good gift for anyone that appreciates mathy art :) You can order it here http://www.amazon.com/Poemotion-2-Takahiro-Kurashima/dp/3037...

Yes! I just got this for Christmas. Granted, I showed it to the person who gifted it :) I still loved receiving it and have spent a lot of time with it.

Re: Scroll Slow. Have Fun

#86

Post by Pxtl » Thu, Jan 08, 2015, 6:44 PM UTC

wldcordeiro wrote: post #71

JonathonW wrote: post #67

Earlier quoted context omitted.

It's an option in Firefox, which (IIRC) is disabled by default everywhere except Windows. Look in Firefox's preferences; on the Advanced tab, it's the "Use autoscrolling" option.

It's one of the first settings I turn on in a Firefox install and I wonder why it isn't default behavior in browsers it's so convenient.

Middle-click-to-instacopypaste-highlighted-text is a well-established standard on Unix/Linux and people are highly resistant to losing it.

I like the Windows convention that the middle-mouse is entirely for navigating the viewpane, so I'd prefer if it was just ctrl+command+click or something for the "selection-paste" operation, but that kind of UI change is a hard sell.

Re: Scroll Slow. Have Fun

#87

Post by oaktowner » Thu, Jan 08, 2015, 7:08 PM UTC

addisonj wrote: post #12

I am lazy and (apparently) suck at scrolling smoothly, dropping this in the console worked well :) setInterval(function() { window.scrollTo(0, document.body.scrollTop + 5) }, 60)

Thanks!

Re: Scroll Slow. Have Fun

#88

Post by matthewmcg » Thu, Jan 08, 2015, 7:18 PM UTC

hamiltonkibbe wrote: post #74

drivers99 wrote: post #35

Earlier quoted context omitted.

"Some surface-mount capacitors exhibit acoustic noise when operated at frequencies in the audio range." [1] I see that this screen has alternating black and white lines. I count 43 black lines on my monitor. Assuming 60 Hz refresh rate, that is 2580 Hz in terms of the pixels being off or on, which is a perfectly audible frequency. Even with 120 Hz refresh rate, that would be 5160 which is still easily audible. Withou…

Inductors do this as well. The changing magnetic field causes the windings to vibrate, creating an audible sound. The sound my work monitor makes sounds like an inductor to me.

Right--or more commonly the cores of old power transformers will softly buzz at 60 hz.

Re: Scroll Slow. Have Fun

#89

Post by dblotsky » Thu, Jan 08, 2015, 7:22 PM UTC

Hooray, Moiré! :)

Re: Scroll Slow. Have Fun

#90

Post by Avitas » Thu, Jan 08, 2015, 7:23 PM UTC

This trick has an interesting artifact.

When I came back to HN, I noticed that my mind made my vision appear actively "wavy." In other words, I could see some slight movement of waves on the horizontally drawn elements currently displayed -- the top orange bar that says [Y]Hacker News [...] had the appearance of fluctuating with low frequency waves.