What is reality?

Sometimes I ask myself what is reality.
The first possible and logical answer is (and I'm quite comfortable with this...): reality is that which we can experiment and measure and describe (the first answer for a physicist).
Yes, but sometimes our senses can play tricks. That's why we use machines and instruments to measure things.
Some philosophers say that reality is other than the material world, that, even if we build our mathematical theories and descriptions, with all their experimental confirmations, these aren't but a pale description of what there is beyond.

Maybe they just say that because they do not understand mathematics...

Fact is, even the experimental confirmations of the theories have sometimes been used to confirm other theories (enlarged ones, think of gravity and relativity).
So the question returns: what is reality?
It is amazing how physics can describe our world, how the connection between the pure theory of numbers and the forces and laws that govern the material structure of the universe go hand in hand.
But again, is that all there is? Is there something beyond (or below)?
I don't know, but I wish I could have a glimpse of what science will be in 10000 years, just to know if the answer is nearer.