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Wednesday, August 20, 2014

The Amazing Northern Lights (Aurora Borealis) - FINLAND

Tuesday, August 19, 2014

Red Filter Glasses

Enjoying this summer...
Now I made another tool to teach light and color in my Physics class.
Take a look:

Monday, July 28, 2014

Andromeda's Galaxy

After a whole year of work (really hard this one), now is time to rest and relax.
So, yesterday I went with some friends to Serra do Alvão, Vila Real (Portugal), and we started to watch the night sky and some astronomical objects with telescopes.
I don't have a telescope. So, I took some pictures and, for the first time, I captured Andromeda's Galaxy.
The result is three pictures combined as one.

Have a nice summer time.

Monday, June 30, 2014

Gravitational potential and speed of light

Remnant of Supernova 1987A seen in light of very different wavelengths. ALMA data (in red) shows newly formed dust in the centre of the remnant. Hubble (in green) and Chandra (in blue) data show the expanding shock wave. Credit: ALMA/NASA

( —Physicist James Franson of the University of Maryland has captured the attention of the physics community by posting an article to the peer-reviewed New Journal of Physics in which he claims to have found evidence that suggests the speed of light as described by the theory of general relativity, is actually slower than has been thought.

Read more at:

The paper is available in IOP website.

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