Show F FREAKS REA K Sand and 0 ODDITIES D D I TIE S SIN IN S SCIENCE SCIENCE CIEN CE NEW NEWS NEWS- S- S Echoes from unseen boats docks and buo buoys S In Long Island sound have enabled an engineer to navigate a ton seventeen motorboat safely through thick fog A device called a sonic locator is used A megaphone megaphone meg meg- aphone directs a a. shrill whistle of a frequency of cycles per second ahead of NAVIGATING the boat Objects in hi the path WITH AID of the sound reflect a portion OF SONIC SONIO back to receiving Instruments LOCATOR on the boat where It Is observed by a navigator with a stopwatch Measurement of the time elapsing between the sounding of the whistle and the receiving of or the echo makes possible a Do close determination of or the distance to objects ahead of the boat A high frequency whistle Is essential to the ap apparatus apparatus ap- ap because the scattered sound energy re reflected reflected re- re by small objects Is times greater when the sound source Is a cycle whistle than when tho the sound comes from an ordinary whistle 4 H Existing practices In our civilization especially U our medical practice administration of criminal crim crim- inal thai justice and industrial methods are distinctly unfavorable t to the preservation of or mental health according to a noted psychiatrist He maintains the present world crisis may be a blessing In disguise disguise disguise dis dis- dis- dis guise In that it will force us to reexamine our position position po po- po- po to look Into the future and to train leaders to meet new emergencies |