| Cosmic View: The Universe in 40 Jumps by Kees Boeke (1957) |
page 39 |
|
| TOP Flaps 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 |
| Powers of ten: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 <> 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 |
 
| |||
| -5. |
On the upper layer of keratin (1) a number of viruses are crowded together,
as they often actually are on the skin. One of the larger ones is smallpox (2). A
bacteriophage (3) of medium size as we saw in the previous drawing is shown
here very distinctly from an electron-microscopic observation - just to give its
size and shape, for it would not be likely to lie here by itself! Many molecules
could be shown on this scale. Some starch molecules (4) are drawn. The inset
shows the helical structure of the flagellum (5) as seen in the electron microscope.
The flagellum clearly is composed of three strands wound into what
looks like a cord. Magnification is here 100,000 times, about the maximum
that can be reached with the electron microscope. The height of the salt crystal
on this scale would be 50 meters.
| ||
|
This content is from Kees Boeke's book, Cosmic View: The Universe
in 40 Jumps. It has been placed online without permission. Copyright (C) 1957 by Kees Boeke. All rights reserved. No part of this book may be reprinted, or reproduced or utilized in any form or by any electronic, mechanical or other means, now known or hereafter invented, including photo-copying and recording, or in any information storage and retrieval system, without permission. |