Weekly Photo Challenge: (Crater’s) Edge

A submission to the latest Weekly Photo Challenge :Edge

Taken on our trip to Ngorogoro Crater in October 2014.

Rising Mists

Crater from the top

Weekly Photo Challenge: Edge (of Paradise)

Taken from our trip to Zanzibar in December 2014. Photos from the edge of paradise.

Anemone

Starfish

African Monarch Butterfly

Zanzibar Coast

Hipolimnas Misippus

Zazibar Paddle

Dimorphic Egret

Red Colobus Monkey

Grey Mullet

Plovers

Sea Urchin

Weekly Photo Challenge: Edge (of Glass)

Why is glass green when viewed edge on? I wondered this today as I looked at the glass slats on the windows of our Tanzanian home. 

Google is a great resource for such trivia. It seems the colour is a result of iron impurities which impart a slight green tinge to most glass – the colour is amplified at the edge as you peer through a much thicker layer through  it’s length.

Apparently the iron is a legacy of the manufacturing process as it lubricates the passage of molten glass across  the smooth surface of molten tin during the formation of glass sheets. The only way to ensure flat glass!

So here is a submission to this week’s photo challenge edge.

WeeklyPhoto Challenge: (Water’s) Edge

A submission to this week’s photo challenge taken at the water’s 
edge at Whisby Nature Reserve in the UK this summer. The sharp plants standing out against the blurred water.