You see, the chemists have a complicated way of counting: instead of saying "one, two, three, four, five protons", they say, "hydrogen, helium, lithium, beryllium, boron."


QED: The Strange Theory of Light and Matter (ed. Princeton University Press, 2014) - ISBN: 9781400847464


You see, the chemists have a complicated way of counting: instead of saying one, two, three, four, five protons, they say, hydrogen, helium, lithium, ...

You see, the chemists have a complicated way of counting: instead of saying one, two, three, four, five protons, they say, hydrogen, helium, lithium, ...

You see, the chemists have a complicated way of counting: instead of saying one, two, three, four, five protons, they say, hydrogen, helium, lithium, ...

You see, the chemists have a complicated way of counting: instead of saying one, two, three, four, five protons, they say, hydrogen, helium, lithium, ...