relativity we learn many secrets, including the 'Twin Paradox.' In this theory, a twin that travels away from earth a fraction shy of c (lightspeed), time becomes highly stretched. Let's say he travels a distance of 1,500 lightyears at a speed of 185,888 mps, and when he finally returns, he will find his twin brother on earth has aged remarkably... in fact, his twin brother will probably be six foot under, while he himself might have only aged a couple of years! This is the paradox of space and time when you move through it at a very fast speed. The twin who traveled the 1,500 lightyears moved so fast that his time slowed down. Let us look at some particles here, to describe some velocities, and how the speed of something marks a territory between real time (imaginary space), zero-time and real space (imaginary time). A Bradyon, also known as a tardyon, (v<c) moves always with a velocity under c. The speed of light, it turns out, is a kind of border - this barrier is able to limit all Bradyons with a speed always under 186,000 miles per second. For a mass to exceed the velocity of c, means that it needs to increase in mass (we are Bradyons, thus we cannot travel faster-than-light). Thus if a particle exceeded the speed of light, it would need to double in mass - it would also require an infinite amount of energy! This is what relativity explains. A particle that moves like a Bradyon moves in 'real time' - which is the same as 'imaginary space.' We move so fast through time, and we hardly ever move through space. Time moves through us at the speed of light. We move through time at 186,000 miles per second - this means you are 186,000 miles away from where you where just sitting or standing in each passing second. The root word Brady literally means 'slow' - hence the fictional family, 'the [Brady] bunch', hinting at a family with slow-working intelligence. A particle with a velocity equaling c is a bit of a surprise. This particle is ageless. This is, what is called a zero-time particle (a particle that exists for no time at all, as you might remember from Ch.1). A zero-time particle, also means zero-space, as it neither moves in 'real space' (which is imaginary time) or 'real time' (which is imaginary space). A photon is a zero-time particle, and ever since it left its source, it existed as if no time was ever spent. In this sense, a photon is never really born, and never really dies! There is a hypothetical substance called, tachyonic matter. This matter travels in imaginary time. It spends no time in real time, as it will oscillate back and forth throughout the time dimension. This tachyonic matter moves faster than the speed of light. Such a substance is permitted by relativity because it started with a velocity over c. It is also made of a strange substance called 'imaginary matter'. The word 'tachy' comes from 'tachycardia,' which is fast heart rate. To make your way through all these imaginary concepts, just remember this following rule; A Bradyon, like most matter in the universe moves below the speed of light, which means it will travel in real time, which is the same as imaginary space. A particle that moves at the speed of light means it experiences no time at all, nor any space. And a particle that moves with a velocity over the speed of light moves in real space, which is in relativity, imaginary time.
Einstein was born on (March 14th 1879 - till April 18th 1955) and was born in Germany, who published his theories in 1905, and published his general papers in 1915 - they revolutionized our ways of thinking about the universe. He received his Nobel Prize in 1921 for his work on the 'Annus Mirabilis,' which describes 'photoelectric effects' including his contributions to theoretical physics - in fact, some scientists believe he should have received more Nobel prizes for his work on 'the Brownian Movement' and special relativity - since the Brownian Movement itself showed the existences of atoms - something that was not widely excepted before Einstein.