And so also at the other end a machine which, by the application of but little power will the rays would be brought to a focus in the lower mirror. I of the spectrum we have a vast body of rays stretching out raise a column of water to any desired bight, to furnish mo- want to show you this with… … now far finer methods, and with the electric lamp which you It is hot compared with the freezing mixture, and that pile Fig. 1 represents a tube bent into the form of a compound now see before you, we went over these colors with a thermo- radiates its heat against this lower mirror; the heat is…
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