1. n-type material, 1
2. NASA (National Aeronautics and Space Administration), 1, 2 n. 18
3. National Grid, 1
4. National Institute of Standards Technology, 1
5. natural selection, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 n. 2;
   1. see also inheritance, traits, variation
6. Navier–Stokes equation, 1
7. Neanderthals, 1, 2;
   1. interbreeding, 1
8. nematode worm, 1
9. neocortex, 1;
   1. corpus calossum, 1;
   2. hemispheres, 1;
   3. left side/right side, 1
10. Neptune, 1 n. 2
11. nerve cells, see neurons
12. nervous system, 1, 2, 3, 4 n. 13
13. Netherlands, 1
14. neurons, 1, 2, 3, 4, 5, 6 n. 1, 7 n. 13, 8, n. 17;
    1. axons, 1, 2, 3, 4 n. 8, 5 n. 17;
    2. connections, 1;
    3. dendrites, 1, 2, 3, 4;
    4. forgetting, 1;
    5. learning, 1;
    6. meditation, 1;
    7. memory, 1, 2;
    8. networks, 1, 2;
    9. receptors, 1, 2;
    10. repetition, 1;
    11. synapses, 1, 2;
    12. synaptic gap, 1, 2 n. 8;
    13. terminal buttons, 1 n. 8;
    14. see also neurotransmitters
15. neuroplasticity, 1, 2
16. neuroscience and neuroscientists, 1, 2, 3, 4
17. neurotransmitters, 1, 2, 3;
    1. see also acetylcholine, dopamine, glutamate, serotonin
18. neutrinos, 1, 2, 3 n. 14, 4 nn. 7, 8, 12;
    1. electron neutrinos, 1;
    2. muonneutrinos, 1;
    3. sterile, 1 n. 12;
    4. tauneutrinos, 1
19. neutron stars, 1, 2, 3 n. 12, 4 n. 3
20. neutrons, 1, 2, 3, 4, 5, 6 n. 6
21. New Scientist, 1
22. New York, 1
23. New York Times, 1
24. Newton, Isaac, 1, 2, 3, 4, 5, 6, 7, 8 nn. 8, 9; 9 n. 2, 10 n. 3, 11 n. 5;
    1. see also gravity
25. nitrogen, 1, 2
26. Nobel Prize, 1, 2, 3;
    1. for Physics, 1, 2, 3, 4, 5 n. 9, 6 n. 3
27. Noether, Emmy, 1, 2, 3 n. 6
28. non-locality, 1, 2;
    1. see also location
29. North America, 1, 2, 3;
    1. see also Americas
30. North Atlantic conveyor, 1
31. North Pole, 1
32. nothingness, 1
33. nuclear bomb, 1, 2, 3, 4
34. nuclear forces, 1;
    1. strong, 1, 2, 3, 4, 5 n. 6;
    2. weak, 1, 2
35. nuclear fuel, 1, 2 n. 7
36. nuclear power, 1, 2, 3 n. 16
37. nuclear radiation, 1
38. nuclear reaction, 1 n. 21
39. nuclear reactors, 1, 2
40. nylon, 1, 2 n. 9