Sunset!

As the weather was so good while we were in Portugal, we decided to have a walk down to the beach one evening to watch the sun set over the sea. There was still an hour to go when we settled down on the steps of a closed beach-side restaurant.

The colours of the sun deepened and reddened as it dropped slowly towards the horizon.

The redness of the sunset is due to the slight being scattered through the atmosphere by dust particles, soot and various solid and liquid aerosols. This explains why sunsets are usually more spectacular after events such as volcanic eruptions which blast huge amounts of particles into the atmosphere.

At last, the sun had set and it was time to get back to the apartment for dinner. A perfect end to the day.