In physics, mass is defined as the amount of matter contained in an object, which directly influences its inertia, or resistance to changes in motion.

What is Mass? An explanation of the property of matter and its relation to waves by Jeff Yee. Mass is a peculiar property of matter. It can grow. It can disappear. It can be recreated again. Yet all this happens while energy is conserved. What is mass? We know that particles have wave-like behaviors. A new way of looking at particles as standing waves of energy answers some of the mysteries of matter.

What is matter? It’s not as basic as you’d think. Matter makes up nearly a third of the universe, but is still shrouded in secrets.

E=mc^2 is perhaps the most famous equation in all physics, but very few people actually know what the equation means, or where it comes from. In this video I would like to show one method for deriving this equation, as well as provide some insight into what the equation actually means. Along the way we will also touch upon some of the most fascinating features of Einstein’s theory of special relativity, including time dilation, the reason why nothing can travel faster than the speed of light, and the relationship between energy and momentum for massless particles.

Science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.