The National Geographic Magazine, Volumes 98-99National Geographic Society, 1951 - Geography Indexes kept up to date with supplements. |
From inside the book
Results 1-3 of 81
Page 697
... light , room - cool to the touch ( page 701 , right ) . Light Virtually Without Heat In the average electric bulb only about 3 percent of the electrical energy goes into vis- ible light ; most of the rest is lost in heat . In the firefly's ...
... light , room - cool to the touch ( page 701 , right ) . Light Virtually Without Heat In the average electric bulb only about 3 percent of the electrical energy goes into vis- ible light ; most of the rest is lost in heat . In the firefly's ...
Page 697
... light . This woman plucks the insects , like glowing flowers of the night , at Uji , famed for its fireflies . Professional catchers sometimes pop them into their mouths for temporary safekeeping . Japanese buy thousands of the insects ...
... light . This woman plucks the insects , like glowing flowers of the night , at Uji , famed for its fireflies . Professional catchers sometimes pop them into their mouths for temporary safekeeping . Japanese buy thousands of the insects ...
Page 697
... light , that of P. pyralis , was found by Dr. William W. Coblentz , of the National Bureau of Standards , to have a usual strength of one 400th candlepower . Less bright , but often sustained for minutes at a time , is that of the big ...
... light , that of P. pyralis , was found by Dr. William W. Coblentz , of the National Bureau of Standards , to have a usual strength of one 400th candlepower . Less bright , but often sustained for minutes at a time , is that of the big ...
Other editions - View all
Common terms and phrases
American ancient Anthony Stewart arms artist Bali Beach beauty Big Trees birds booklet boys buildings California camera Canada Catalog caves century China City College color from natural-color color plate Company dance Dept East enjoy Ensign famous feet fireflies fishing flamingo girls highway hills Illustrations Indochina industry Ireland Irving Johnson King Kodachrome Kordofan Ladakh Lake land living Long Island Luis Marden Maynard Owen Williams Mention the National Merchant Flag Mesopotamia miles MILITARY modern mountain National Flag National Geographic Magazine National Geographic Society National Geographic-It identifies natural-color photographs Nuba Pacific perfume picture Polident Puerto Rico ride River road Robert Moore sailing San Juan School Sequoia Sevilla South Street tion town Trail Travel Agent United vacation Valley village Volkmar Wentzel walls Washington watched West women Write Yankee York Yugoslavia