Show coast quakes leave valuable data h 1 i traps set by U S scientist lilington WI lIngton uncle sams gains scion fists bot act it trip for an all earthquake a few ow months ago and now it a quake 11 lias Is come como along and jumped right into it tho the trap really a series of traps consists of machines designed to record just how tile tho ground shakes and shivers when alie n an all earthquake occurs A knowledge knowl edgo of this la is necessary for or scientific construction of buildings designed to resist the snap the whip effect of earth quake shocks today scientists of the united states coast and geodetic survey on tho the west coast were on way to inspect the traps to seo see just juat how much earthquake knowl olge effige had been caught four traps were in the earthquake zone two at los 1108 angeles and one crie ench each at long iong beach and spit sn diego just hw how the traps had worked was riot not immediately known duo due to difficulty in reaching points where they were installed knowledge gained dom the records ot of the traps etch higa ni in the tonn form ot at zigzag curves on oil paper may help p bovent vont earthquake disasters of tile future chief damage and loss loas of life in quakes comes from falling buildings and ad the tires fires they start when the coast and geodetic survey set its traps it did not know whether they would be sprung the next day or 20 years hence twelve wore placed in various parts ot of tho the country whore where it was wag believed earth shocks might occur they wore were st set to bo be shaken into action automatically by a and start recording its speed direction and force Eath earthquakes quakes shako shake buildings in i double reverse manner tho the top of the lie building sways one way while tile tho foundation la is moving the othor anthor this sets up a strain that throws oft off copings roofs and chimneys and sometimes causes buildings to collapse with better knowledge of how double strain works it Is believed buildings can call bo stiffened to resist it tho the earthquakes write their own record in the traps A shoot sheet of photographic to paper morea with tile the quaking earth under tinder a pencil of tight light that remains stationary on the moving paper tile the light records a curve that Is a picture of the q 3 action tribune |