We can't see elementary particles like electrons, protons, quarks and so on and its reason is it is very very small and no matter how powerful microscope you make you will never observe this particle. To understand this we must understand the concept that what is observing? To see sth you need light(electromagnetic wave) to hit a substance and to reflect it at your eye where your brain forms image.
To,solve this problem we need light with small wavelength so that elementary particles would get reflected but since wavelength is indirectly proportional to energy at quantum level the energy of the light would be very high and when hit on the elementary particles it would bounce it off.
In contrast, there is no any method to measure both position and velocity of elementary quantum particles because to observe one you must loose the other. Hence there is no any precision and if you find a suitable frequency amd wavelength then the picture you will get of the particle will be very blurry since energy is low so again you could measure the velocity of that particle but still you won't be precise about it's position.
It is just like photoelectric effect by Einstein amd Heisenberg uncertainty is very important factor in quantum physics.
Let's say that you want to measure the distance of a ball on the ground and the only possible way for measuring the distance is to throw another small ball directly at it and measure by reflection....but now that you hit that ball with the other small ball the force tends to move it and makes it travel further more and changing its initial position so there is no any chance of ascending its position unless.... If we decrease the velocity of small ball.
