Light

The light that can be seen by the human eye is electromagnetic radiation with a wave ranging from 390 to 750 nm (some people can differentiate the color of a bit bigger range, like 380 to 780 nm).

Phrase

When life gives you lemons, make lemonade.

Hyperfocal Technique

Metering Modes

flickriver

Found a nice flickr api website flickriver to stream photo.
My flickriver link