Leaves a Bad Taste: Large Vanilla McCafe Shake: 820 calories. A large (22 oz) vanilla milkshake from the McCafe will set you back 820 calories. That's about two-thirds of a whole day's calorie content of 1,500, recommend for weight loss. A medium (16 oz) shake has 670 calories, while the small (12 oz) vanilla milkshake has 530 calories.
Darkness doesnât involve waves because itâs a lack of electromagnetic waves. If you define the speed of dark to be the speed at which you could find out about someone turning out the lights, itâs exactly the same as the speed of light: 671 million mph, or 2.99 x 108 m/s, or about 1 foot per nanosecond.
Speed of light. The speed of light is the speed at which light travels in empty space. Physicists often use the letter c to denote the speed of light. It has the value 299,792,458 meters per second (or about 186,282.397 miles per second). A photon (particle of light) travels at this speed in a vacuum. According to special relativity, c is the maximum speed at which all energy, matter, and physical information in the universe can travel.