Merry O’Moon Day

Lunar libration with phase Oct 2007 450px 4D

View with red/blue 3D glasses.

Reverend Arthur Slade created a 4D version of this animation found on Wikipedia.

The 60 frame animation originally showed the moon at 12 hour intervals. The effect is an appreciation of not only the way the light source gives us our moon phases as it circles us but also the apogee/perigee cycle as we can see the moon sweep in and swing back.

This swinging, turning motion has actually give us a chance to understand the spherical nature of the moon. Here, it is clearly not a disc but a ball.

Reverend Arthur Slade took each frame, split them into red and cyan and then offset one of the images by a frame, that is, 12 hours. With red/cyan 3D glasses each eye is seeing the moon with 12 hours time difference. The movement in that time is enough for us to get a impression of its roundness.

Because the 3D effect is due to a difference in time Slade dubs this ‘4D’

To find out why today is called the O’Moon day click here

Tonight we will celebrate the full moon outside St James Church on the corner of Pollen and Pahau streets in Thames at midnight with a flash mob drumming circle.


Photos of the Total Fire Band at Speak Easy

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Kau Kaka Ora Kardashian and the Total Fire Band played at Speak Easy on April 4th. Here are some photos.

Here is the original post with the poster

3D Summer in Pueleaz Mau 2013

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