Salt Lake Telegram | 1931-11-12 | Page 11 | Humans Stone Blind While Reading except for Minute Fragments of Split Seconds, Scientist Learns

Humans Stone Blind While Reading Beading Except for Minute Fragments of Split Seconds Scientist Learns Connection With Brain Cut While Eyes Pick Up tip Printed Matter I By Dy R. R A. A n E I A l Press PreM r When 12 When you OU do such uch things thing as aa read this newspaper newspaper news new aUbut allbut all aU allbut during are stone atone blind pa paper r- r you but tiny fragments fragment of ot split pUt seconds These Theae tiny fragments fragment were measured measured mea- mea by Frank K Moss Mos research engineer engineer en en- neer in the lighting laboratory at Nela park he her here He lie found them to range In size sire from seven Je to fifteen hundredths hundredth of ot a second As A. you read a Ii printed line your your eye moves and stops slops at short Inter Inter- Inter Inter-I vals vala While bUe the eye ee Is I. In motion it picks up the reading matter but the connection with the brain Is u shut off lotto While the eye moves until It has hu I picked up all aU It can hold or In n nother other wor words until you get an eye eyel full the connection to the brain Is broken MEASURED ACCURATELY You are blind bUnd Moss discovered about three tenths of a second at a time The eye accurately measures this Interval and he said aid If you dont don't pick u up what you have read In that length of time you OU probably are unable to read In conducting this experiment Moss Mosa used an accurately timed rotating rodl rotating ro ro- tating dl disc dine c painted white while on a white background and pierced In the center center center cen cen- ter with two parallel slits silts How the vision lagged Jagged behind the actual position position po po- of the parallel slits silts In relation rela relay tion Uon to the horizontal was wu made known by the subject through sig sig- nals nab Mou made measurements on this on one on subject using wing varied in intensities In- In of oC light They were part In-I In of at his hi effort to determine how much light our eyes n need d for Cor comfort while at work He estimates that they need about thirteen times as u muchas much as u they get In customary office lighting light light- ling lag ing which averages In strength that of ot an eight candlepower lamp on a sheet of paper held a foot Coot away WORST n BENEFIT MOST In the higher Intensities of oC lighting light light- ing ling Moss Mou found the worst eyes eu receive receive re ree re- re the greatest Increase In benefit benefit bene bene- fit and the best but eyes the smallest likewise the slowest lowest workers worker receive Ithe the greatest benefit fr from m great brilliancies brilliancies bril brU and the most rapid the smallest I Another peculiar phenomenon of oC the eye Moss discovered Is that It Increases In accuracy and rapidity lof of action after a day of oC hard work I He found however hown that It t Is an extremely accurate measuring Instrument Instrument In In- strument able at a distance of ot 14 Inches to detect a difference in ilen length th of ot four tour thousandths one of ot an Inch