Have you ever wondered why, for example, if you held the word stressed
in front of a mirror, it would read “desserts?” How come mirrors seem to
only flip things horizontally, rather than vertically? Of course, the
mirror doesn’t know the x-direction from the y-direction, so what’s
going on?
In the video below, vlogger Physics Girl explains
the reason, and although it may have never dawned on you before, it’s
actually pretty simple. As Meg points out, it’s because weare
presenting the images backwards, not the mirror. We flip them
horizontally and not vertically. If you wrote the word desserts down on a
piece of paper and then flipped it vertically to face the mirror,
rather than horizontally, it would still read desserts, albeit upside
down, of course.
Check it out here:
0 comments:
Post a Comment