27 May 2012 by Graham Stephen - 2 Comments Fern v K’nex Fern v K’nex cyanotypes Share this:TwitterFacebookLike this:Like Loading...
17 May 2012 by Graham Stephen - 5 Comments Sunflower Sunflower Sunflower Sunflower Sunflower Sunflower Sunflower Share this:TwitterFacebookLike this:Like Loading...
9 May 2012 by Graham Stephen - 0 comments Aerial interference Interference fringes visible on the inner wall of a tubular aluminium aerial mast Optical interference patterns Coloured patterns visible down the inside of the tube Looking down towards the end of the tube Interference patterns Featured on Atmospheric Optics Picture of the Day, 23 July 2012 Share this:TwitterFacebookLike this:Like Loading...