Clever Clocks

I went to the Rijksmuseum in Amsterdam on Monday and was really tickled by this exhibit:

It's called "Grandfather Clock", part of the "Real Time" series by Maarten Baas.

Initially, it just looks like a Grandfather Clock but then you see a partially obscured figure inside the clock rub out the hands showing the time and draw in new ones. People near me were wondering whether someone was inside it, although it's clearly a film projected onto the clock dial.

Here's a video of it:

I love it!  So clever!

Here's an essay on why the Grandfather Clock is exhibited in a hallway rather than one of the galleries.   It demonstrates how people react to art differently when it's not located in an expected place, even within a gallery.

Maarten Baas's "Real Time" series also includes:

A digital version of the same thing:

And "Sweepers' Clock" -  two people sweeping lines of garbage so they form the hands of a clock:

 UPDATE on 23rd October

Another clever clock, featured in today's Dezeen:

In this case, if you point your finger at the centre of the clock, shadows are cast giving the correct time.  Watch this video.

And last (for now) but not least, check out this wall clock, posted on YouTube by Aristidis Boustras: