Psychological reasoning behind measure lengths and metronome markings

[biscuitroxy12]

Hello guys,
Well, I'm bored right now as I'm printing out every piece of music ever written by Beethoven because I want ideas for my own composing. I decided to post something that I've been brainstorming ever since I first started pushing the keys.

I'm sure you've all noticed this, well, maybe professional pianists more so than amateur pianists. I'm not saying that I'm a professional. I'm far from it. I'm actually a student. Anyways, has anyone noticed that measures with 16th notes can seem to fly by faster than a measure with a whole note? Let me show you an example.

The metronome is set at...100. I'm playing a Beethoven piece and I have a line of whole notes, and then a line of 16ths. The metronome marking is the exact same and the measure lengths are the same, but somehow, it seems to go by a lot faster. I have a feeling that it has to do with mathematics and bored-ness from holding that note for a whole grueling line, but I just wanted somebody else's opinion of it.
Cheers!
biscuitroxy12

[keyboardclass]

You really think time exists?  The jury's out.