Stamp Machine 1960S
A young woman puts a penny (1d) in the slot of a stamp machine, which will dispense a second class book of stamps. First class stamps are 3d (thruppence) per book.
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10145040
1960s, 3d, Book, Class, Communications, Dispense, Historical, History, Machine, Machines, Over Coat, Penny, Post, Pretty, Puts, Slot, Stamp, Stamps, Three Pence, Thruppence, Vacant, Watch, Woman, Wrist, Young
Red blood cells and platelets, SEM
Red blood cells and platelets. Coloured scanning electron micrograph (SEM) of human erythrocytes (red blood cells) and a platelet aggregate (orange). Platelets are fragments of white blood cells that under normal circumstances are small and biconcave in form. However, if there is a break in the surface of a blood vessel the platelets come into contact with molecules they are not used to and become activated. They become amorphous in form, with long projections (pseudopodia) that help them adhere to other cells and each other, forming a clot. Magnification: x3000 when printed at 10 centimetres wide.
© Science Photo Library
Plesiosaur marine reptile, illustration
Meyerasaurus sp. plesiosaur with trilobite prey, illustration. The plesiosaurs were marine reptiles from the age of the dinosaurs, flourishing from the late Triassic period until the end of the Cretaceous period (200-66 million years ago).They existed in a variety of sizes; some with very long necks, and others with relatively short ones. The shortest plesiosaurids were around 1.5 m long, but their larger cousins grew to up to ten times that size.
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