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Home > All Images > 2004 > August > 25 Aug 2004

Images Dated 25th August 2004

Choose from 36 pictures in our Images Dated 25th August 2004 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Cafe wall illusion Featured 25 Aug 2004 Image

Cafe wall illusion

Cafe wall illusion. This illusion is so named because it was first noticed on a tiled wall in a Bristol cafe. The pattern in the image appears to show sloping grey lines between the black and white "tiles", but in reality the lines are parallel. This effect is due to the compromises that both the brain and the light receptors on the retina (back of the eye) have to make when image processing. There is no reason for the tiles to be black and white for the illusion to be achieve - it is their relative intensity which affects the outcome, not their colour


X-ray of osteoarthritis of the hip Featured 25 Aug 2004 Image

X-ray of osteoarthritis of the hip

Osteoarthritis: X-ray of a hip joint showingosteoarthritis. The bone in the lower right is thefemur (thigh bone). This is connected to thepelvis by a ball-and-socket joint. Osteoarthritisis a disease of the joint cartilage that isassociated with changes in the underlying bone. Itis recognized on X-rays by a reduction in thejoint space (due to loss of cartilage), by thepresence of osteophytes (bony projections), and bya ragged, irregular appearance of the remainingjoint. Osteoarthritis is associated withmechanical wear and most commonly affects theelderly. Deterioration of the joint causes pain, stiffness and lack of mobility

© Dr P.Marazzi/Science Photo Library