WEEK FIVE - POST ONE

• Speed of light is constant
• Doesn't follow the law of inertia by observers
• Unlike light, if you throw a ball while going down the highway at 60 mph and the speed at which you throw the ball is 20 mph, you'll observe the ball to be going 20 mph while an onlooker standing on the sidewalk would observe that ball to be going 80 mph because the velocities add up.
• Light is an absolute, meaning that if you turned the lights of your car on while going 60 mph, you and the onlooker would both observe the light to be going to same speed ( 300,000 km/s).
• We don't know why the speed of light is constant nor why it is 300,000 km/s
• This new postulate was discovered by Einstein and explained why the Michelson-Morley experiment failed to prove the existence of ether
• An object going the speed light has its length shortened, time slowed, and mass increased
• These three effects are against everything common sense tells us as well as going against Newtonian physics where space and time are absolute