Part 2: How to Stream Roku Supported Videos and Audio. If you have the video formats that Roku supports, congrats. But wait a minute, you can only cast them from phones to your TV via Roku, as long as you have an Apple device with iOS 4.3 or later, or one of the following Android phones or tablets: Samsung Galaxy S III.
A day, symbol d, is defined as 86 400 seconds. The Second is the base unit of time in SI units. A day according to Coordinated Universal Time (UCT) can include a negative or positive leap second, and can therefore have a length of either 86 399 or 86 401 seconds.
These are replaced at a rate of about 2 million per second (again, from wikipedia). There are 86,400 seconds in a day and so: (2 million x 86,400) + 50 to 70 billion = 222 billion to 242 billion cells produced every day by the average human body. Note, this is for the average adult. The rate of red blood cell production slows as you grow older. In order to understand this, we need to understand cell division.