cession of external that about 9,000 birds per hour passed during the introduced. The result of this first projected applica- heat by means of the return current from the under- period of observation. When we compare this path tion of liquid air to practical refrigerntion, on a scale cooler of very… … tally different species. packing is required, as is This fleld of night study, so full of novelty and in- valuable as data for future operations, will be watched But necessary in all other liqu.J air machines, terest, need not be confined to owners of telescopes, with much interest. the production…
Air · Heat · Engine · Turret · Liquid · Scientific American · Bicycle · Electric heat · Water chambers · Liquid air · Electric energy · Horse power · High pressure · Gas engine · Electric heater · Sur les
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