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Graphics and Patterns Gallery

Choose from 52 pictures in our Graphics and Patterns collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Kidney tubules in section Featured Graphics and Patterns Image

Kidney tubules in section

Kidney tubules. Fluorescent light micrograph of a section through kidney tissue showing numerous tubules (black/green). The tubules are seen in cross-section. Their walls are black, with cell nuclei stained purple. The inner lining of the tubules is green. Tubules are part of the filtration system in a kidney. Blood passes through capillaries in the kidney, and fluid and molecules of waste products pass into the tubules. During the passage through the tubules, much of the water is reabsorbed, leaving a concentrated solution of waste products. This drains to the ureters, which pass it to the bladder as urine


Compound eye of a gnat, SEM Featured Graphics and Patterns Image

Compound eye of a gnat, SEM

Compound eye. Coloured scanning electron micrograph (SEM) of the surface of a compound eye from a fungus gnat (family Sciaridae). The eye consists of many rounded lenses known as ommatidia. Each ommatidium is a simple eye that sends a signal to the gnat's brain. All the signals are combined by the brain to form a mosaic view of the world. The image seen is not very sharp but good at detecting movements. Between the lenses are hair-like structures called interommatidial bristles. Magnification: x850 when printed at 10 centimetres wide


Electron flow Featured Graphics and Patterns Image

Electron flow

Electron flow. Computer model representing the flow of electrons through a two-dimensional electron gas (2DEG). The "gas" is composed of many free electrons, which can move around in only one plane. The 2DEG possesses an electric potential. Irregularities in this potential produce a "bumpy" surface. The model shows the paths taken by three groups of electrons released into the gas from the bottom right corner. The electrons were deflected by the bumps in the gas, producing a branching pattern, with the greatest density of electrons represented by the darkest areas. The fish was added later. Modelled by Professor Eric Heller, Harvard University, USA