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Monthly Archives: May 2014

New Years Day Sun Halo

New years day full Sun Halo

On New Years Day or otherwise know as  1st of January 2014 while having a group family BBQ  to celebrate the start of a new year at Davistown, New South Wales Australia, we witnessed a rare occurrence of a Sun Halo.

What is a sun halo. Well thanks to wikipedia “it is an optical phenomenon produced by ice crystals creating colored or white arcs and spots in the sky. Many are near the sun or moon but others are elsewhere and even in the opposite part of the sky. They can also form around artificial lights in very cold weather when ice crystals called diamond dust are floating in the nearby air. They are produced by the ice crystals in cirrostratus clouds high (5–10 km, or 3–6 miles) in the upper troposphere. The particular shape and orientation of the crystals is responsible for the type of halo observed. Light is reflected and refracted by the ice crystals and may split up into colors because of dispersion. The crystals behave like prisms and mirrors, refracting and reflecting sunlight between their faces, sending shafts of light in particular directions.”

This was the first time I had seen one so, like all things you take a photo. Now trying to take a photo directly into the sun is no easy feat. For one  it’s hard enough looking into the sun on a hot summers day at lunchtime around 1pm, let alone being able to seen anything in camera’s  LCD screen. Anyway after  a few tweaks of the exposure the  below was my best photo to show the sun halo.

 

Sun Halo or nimbus

Sun halo, new years day Australia 2014

Have you seen a sun halo and if so when and where have you seen one?

How to replay google doodles

How do you replay a Google doodle

I jumped on to Google today and was presented with the Google doodle for Maria Gaetana Agnesi.

Maria Gaetana Agnesi was an Italian mathematician and philosopher. She is credited with writing the first book discussing both differential and integral calculus and was an honorary member of the faculty at the University of Bologna. Wikipedia

Honestly not that I had heard of her before that I remember anyway. Sorry Year 7 maths teacher. But the doodle was interesting in the way the curve was being generated with the circle and the triangles trans versing across the image.

 Google  Maria Gaetana Agnesi

Google Maria Gaetana Agnesi

Now the animation runs fairly quickly and at first glance in that 3 seconds it’s a little hard to pick up everything that is going on with the doodle.

So i thought how do you replay a Google doodle. Now there is no button to replay the doodle and if you click on the Google doodle itself it takes you to Google’s search results for  “Maria Gaetana Agnesi”

 google Maria Gaetana Agnesi search results

google Maria Gaetana Agnesi search results

Answer: So the easiest way to replay the Google doodle is to press Ctrl + F5 which will force a full refresh of the home page. A F5 by itself does not work.

It would be a nice feature for Google to add a button or something to be able to replay the animated Google doodles.

 

 

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