This game is played by two people, using small rackets, called battledores, made of parchment or rows of gut stretched across wooden frames, and shuttlecocks, made of a base of some light material, such as cork, with trimmed feathers fixed around the top.
An alternative model which once enjoyed equal status with the big bang is the steady state theory, first proposed in 1948 by Hermann Bondi, Thomas Gold, and Fred Hoyle. This model, too, assumes that the universe is expanding, but proposes that it has no beginning or end in space and time.
- Enrico Fermi Although the problem of transmuting chemical elements into each other is much older than a satisfactory definition of the very concept of chemical element, it is well known that the first and most important step towards its solution was made only nineteen years ago by the late Lord Rutherford, who started the method of the nuclear bombardments.