terça-feira, 30 de julho de 2013

Your guess is as good as mine

Where do we go nobody knows
I've gotta' say i'm on my way down
God give me style and give me grace
God put a smile upon my face

Where do we go to draw the line
I've gotta' say i've wasted all your time, honey honey
Where do i go to fall from grace
God put a smile upon your face, yeah

Now when you work it out i'm worse than you
Yeah when you work it out i want it too
Now when you work out where to draw the line
Your guess is as good as mine

Where do we go nobody knows
Don't ever say you're on your way down, when
God gave you style and gave you grace
And put a smile upon your face, oh yeah

Now when you work it out i'm worse than you
Yeah when you work it out i want it too
Now when you work out where to draw the line
Your guess is as good as mine

It's as good as mine ...



As good as mine ...

Where do we go nobody knows
Don't ever say you're on your way down, when
God gave you style and gave you grace
And put a smile upon your face

sexta-feira, 26 de julho de 2013

Por que o céu é azul?

Espalhamento de fótons

A luz emitida pelo Sol é branca, isto é, existem fótons de várias energias. Os fótons com energia correspondente à luz azul têm maior probabilidade de serem espalhados que os de outras cores. O Sol emite luz para todos os lados, uma parte vem direto para o observador, que enxerga quase branco, e o resto vai para diferentes lados. Todos os fótons (azuis, vermelhos e verdes) são emitidos mas os correspondentes à luz azul podem ser espalhados com maior probabilidade e chegar no olho do observador. Se a atmosfera estiver muito carregada (de partículas de poluição, por exemplo), pode haver absorção dos fótons da luz azul e não os vemos. A cor que vemos depende da energia do fóton que chega na nossa retina.


quarta-feira, 24 de julho de 2013

I've been down and I'm wondering why
These little black clouds keep walking around with me, with me
Waste time and I'd rather be high
Think I'll walk me outside and buy a rainbow smile but be free, be all free
So maybe tomorrow I'll find my way home
So maybe tomorrow I'll find my way home



I look around at a beautiful life
I been the upper side of down; been the inside of out but we breathe, we breathe

I wanna breeze and an open mind
I wanna swim in the ocean, wanna take my time for me, all me

So maybe tomorrow I'll find my way home
So maybe tomorrow I'll find my way home

sexta-feira, 19 de julho de 2013