 |
| A session on light pollution and its effects on the 22nd May 2012. |
 |
| Public lighting shining towards the sky: waste of energy and bad effect for people observing the night sky. |
 |
| Public lighting shining towards the ground: best sollution because it saves energy and allows people to observ the night sky close to the cities. |
 |
| Teacher Isadora Gírio, a member of the Night Sky Rangers Program, explaining light pollution and its effects to our class. |
Sem comentários:
Enviar um comentário