Oh, wow, I got it without even trying just by rotating my laptop screen 90 degrees (portrait vs. landscape if that make sense.) with just a web browser on this HN page (no other white screen needed).
I'm sure I've noticed this effect before, as I often stand my laptop on its edge on the floor like an open book when I'm not using it (easier to reach down and grab the body that way), but hadn't paid it much attention and had no idea of the cause.
I'm sure I've noticed this effect before, as I often stand my laptop on its edge on the floor like an open book when I'm not using it (easier to reach down and grab the body that way), but hadn't paid it much attention and had no idea of the cause.
Retina MBP if that makes a difference.