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Reproduced illustration of a single cell.
Reproduced illustration by Roger Hayward of a single cell with the nucleus, chromosomes and genes highlighted as published in Scientific American.
Reproduced illustration depicting the origin of earthquake waves.
Reproduced illustration by Roger Hayward depicting the origin of earthquake waves as published in Scientific American.
Reproduced illustration of exposure time in making a focogram.
Reproduced illustration by Roger Hayward of the philosophy of exposure time in making a focogram as published in Scientific American.
Reproduced illustration of space models for six amino acids.
Reproduced illustration by Roger Hayward of space models for six amino acids (glycine, alanine, serine, threonine, phenylalanine and tyrosine) as published in Scientific American.
Reproduced illustration of various methyl molecule models.
Reproduced illustration by Roger Hayward of various methyl molecule models (skeletal, space-filling, and ball and stick) as published in Scientific American.
Reproduced illustration of an accelerator vacuum system.
Reproduced illustration by Roger Hayward of a "roughing" pump and reservoirs for the vacuum system of an accelerator as published in The Scientific American Book of Projects for the Amateur Scientist, by C. L. Stong.
Reproduced illustration of Cooper's setup for cultivating algae.
Reproduced illustration by Roger Hayward of Cooper's setup for the cultivation of algae from the soil as published in The Scientific American Book of Projects for the Amateur Scientist, by C. L. Stong.
Reproduced illustration of the McLeod gauge.
Reproduced illustration by Roger Hayward of the McLeod gauge for measuring low pressure in a vacuum system as published in The Scientific American Book of Projects for the Amateur Scientist, by C. L. Stong.
Reproduced illustration of a homemade apparatus for measuring metabolism.
Reproduced illustration by Roger Hayward of a homemade apparatus for measuring the metabolism of small animals as published in The Scientific American Book of Projects for the Amateur Scientist, by C. L. Stong.
Reproduced illustration of a seismograph activated by an abandoned well.
Reproduced illustration by Roger Hayward of a seismograph activated by an abandoned well as published in The Scientific American Book of Projects for the Amateur Scientist, by C. L. Stong.