Repairing Gallery

Road Works in Whitehall, London, 1882

Engraving, originally entitled Horse Guards under Fire again, showing a group of workmen re-surfacing the road in Whitehall, London, 1882. In the foreground the men are preparing pitch or tar with their portable furnace, whilst in the background another man lays the paving blocks

© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10132953

1887, Asphalting, Attract, Choked, Construction, Crowd, Fumes, Historical, History, Lady, Machines, Pollution, Repair, Repairing, Road, Road Works, Roads, Spraying, Streets, Surfacing, Tar, Transport, Victorian, Whitehall

Laser eye surgery, artwork

Laser eye surgery. Artwork showing how laser eye surgery is performed. An incision is made into the cornea (light blue), the clear dome-shaped surface that covers the front of the eye, and a portion of it is folded back. A laser (pink) is then used to reshape the remaining cornea, before the flap is replaced. This procedure can be used to treat nearsightedness (myopia), farsightedness (hyperopia) and astigmatism (an unspherical cornea). For a labelled version of this image see C007/4899

© PETER GARDINER/SCIENCE PHOTO LIBRARY

Measuring water levels

Water level recorder in a river, being adjusted by a scientist. It uses float activation of a gearing assembly to move a pen across a chart drum. The chart drum is driven by a spring-wound clock. Depending on the application and choice of clock cycle, instruments can be left unattended for up to one month of continuous recording of water level variations. Recording of water levels can help monitor the relationship to rainfall and the amounts of sunlight. Action can also be taken if the water levels are dangerously high or low

© PAUL RAPSON/SCIENCE PHOTO LIBRARY