luz y calor

https://www.youtube.com/watch?v=HuqDESbyXH0





https://www.youtube.com/watch?v=DXxBGLQ5Q1c



https://www.youtube.com/watch?v=0v8s1IH7flE cancion señor sol


https://www.youtube.com/watch?v=6FqfqxTyClU fuentes artificiales de luz