The persistence of vision is regarded as an optical illusion but it is actually part of human physiology.
<h3>What is persistence of vision?</h3>
The term persistence of vision is the idea that an object is able to remain is sight for a long time even when the object has been removed. This is often used by performers to create a remarkable impression on the audience. The persistence of vision is regarded as an optical illusion but it is actually part of human physiology.
The way that a performance can be designed to make the audience to know that this is the most important scene is called follow through.
Physical change .. you cannot undo chemical ... physical is like bending , shattering a mirror , denting something .. chemical would be rust or something .
The symbol is for phosphorus having atomic number 15. That means it has in its neutral state.
The given symbol has a -3 charge that means it has gained 3 electrons so, the number of electrons in the is: . The number of protons will remain same that is the number of protons = 15.