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Image 8 of Kentucky alumnus, vol. 04, no. 03, 1930

Part of Kentucky alumnus

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‘ 4 - 0 t lf at · it? ‘ U I ‘ » L ` * é t ° ‘· - 6 Knnrucxy AI.UMNus · »»· `E 0 " 0 would be sufficient to lift us 2,000 feet ture that air is capable of holding, depends th . ` .· ‘ , E i . into the air. on the temperature of the air. The warm- _ 0 ii 0 1 ih 'I‘he air surroundin ` th 0` b ` th ` 0 t ' 0t CO . ll , . Q g ug must be able tg el € 2}.11 QCOHIQS, G ITIOIG II’101S Ll1€ 1 th I _ · ‘· · _ ` carry off this heat and moisture, and it IS capable of holding- · m_ V 1 E , ‘ is important that it be carried off at the For example, consider a given quantity m, T 0 I 01 iii rate at which it is generated. If the air of air at 31 degrees temperature and 70% . i .1i ;; is too cool and too dry, it absorbs heat relative humidity. If this air is heated mi _ i r d; I I I and moisture too rapidly for comfort. This to 50 degrees and no moisture 1S added, tg . - · - Y Q W .0 is what we should prevent during the cold the relative humidity is reduced to 35% . 0 l l -0 ‘ winter months. If the air is too warm If the air is heated still further to 70 de- · la ; and too moist, we lose heat and moisture grees, and the moisture content kept the tg 0 . 0 0 ` ‘ too slowly for comfort. This is what we same, the relative humidity will be only _l, - , ` , »_ _ 0 would like to prevent during the hot sum- 17 %% because the air’s capacityfor hold- G { 0 I mer months. The human body makes ing moisture has been greaty increased ie - I0 i ; f` 0 0 automatic adjustments to regulate the by heating it to 70 degrees. Heating air di 1· I ii, rate at which it is forced to lcpe heat without adding moisture makes it rela- . ~ · 1 5;; " and moisture, in different kiHdS of H11`- tively drier, or in other words, lowers the ` V ` l i 1 i` When cold, the body insulates itself, caus- relative humidity. 1 ! ,i ‘ ing the appeal?-hee of iigeeee heehn Whleh This condition of 31 degrees and 70% . 1 . lu · . i I ·¢ ¤ 0 2 0 00¤t1‘3€tS the eklh P0YeS· Wheh tee heh relative humidity is the average outdoor CC — * 0 0 { l 3 * the b0dY cools itself bY exeeeswe Pe1`Sph`e‘ condition for New York City for Febru- te “ T ` » 0` I ’ . thm- _ ary and is approximatey the average for O] ‘ _¥’ `..,. The factors which control the capacity the cold months. When this air comes T ` ; I indoors, which it does even with all win- W ~ = l · .— ·e- · h--4 · A dows and doors closed as has been ex- ! § , ; N, .,,;~ _ _ • _ v_ C] i { E , g -1* _;u-,¤·_;,,,,,. _ —,-· aw · ---. plamed, and is heated to 70 degi ees with ¥ `éif-'{ - ' no moisture being added, it has a relative ii ’ i - ` ` ri. A . humidity of 17 %Cri. This is a kind of { he it 01 air in Which we live during the winter d' s { . y ,.,,,.ig ·. ,_;,`é{ . ,_ ji r · , ·,a _ . l W l . ; sr- ·· -·___+—?r, -—. It is the weather of the Sahara Desert. _ il l* Iqgégf 0 i».5iQ’**' it What edect does this warm, dry air have y F ; !* ‘ ‘ ?—··· ci 6 i__4_ ,,> ‘ upon us? tg , . , 4 Winter is the time when we are bother- “ 5 * ‘ ‘ ed most with colds. f we run true to U Qi W * ‘*"`h‘0‘*‘ A "“ the average person in the United States, , " I ADMINISTRATION BUILDING we will have at least two good hard colds Ii Er , 3 year. I - ii .,* of the air for absorbing our Waste heat Studies made by the United States Pub- are called physical properties—temDe1‘a— lic Health Service indicate the prevalence 1._ FEI 0 ‘ l " '. ture, relative humidity and motion. We of various respiratory illnesses during the O ii . ‘ know that each of these factors aifect our winter months, a time when the air is al- O ` I sense of comfort. A hot, summer day IS most sure to be too dry and overheated. H I much Warmer.Wh€H the humidity IS h1gh» When we go out of doors on cold, Wili- b fli l and a cold, Wmtef del' IS heheh There ee` ter days, our noses run. This is a nuisance. I, it i · Vere when there le e Stmhg Wmd· To ful' But it is an interesting fact that the nose p ii l IY uhdeietehg Haig gigeet Eg eeeh of these is supplying the moisture to humidify the _ '{ i f3et0l`S» We S eh e he em- air before it goes to the lungs. When out- . . · Temperature is a factor with whiclh we doors, the mucous membrane is very l ? are all familia1‘—32 d€g1`e€S F· we HOW moist. When we come indoors, the warm, I _ 5 ! il means ice, and 212 degrees F. means boil- dry air quickly diggs the muccoiésdmenr- Q ing water. brane causing it to ecome irri a e , anc, t i { ~ Relative humidity, however, is not well it is believed, a more active field for bac- t ., · i i understood. It is important because it in- teria. Dry air means dustier air which is . l fiuences the effect of the other two fac- gerIn—laden, so that more germs reach this S j i l tors on our sense of comfort. It may be active field for Infections. _ t { l defined as the amount of moisture con- Dry air affects our looks, too. English t 00 0 tained in a given temperature compared women and Irish women are fortunate to k y - AME to the amount of moisture the air would live in moist climates. They do not keep Q r :3; contain were it full or saturated. The mois- their homes as warm as we do, so that t 2 si PI t e g ‘?] ang ; ,09 Cokl E { 0 porti I 0· 00 ~ 0 My { 4 MY' _ ,, ,-.., .,,.., a . ’_ , I /) , l » l -_=`_ Y , . ·· · . - ‘ - · our-nyu niviimxr , I · V ` ,`, ; City · Stme , _ I-xi\/ii_,I\lL/·\1Y g Q 1/'\-I y _. l I V `;’/ U { \ W y *— . .i ‘ - __ yp, , · · · .._, _ _ l.. -- , ..-.._ ·— -.-· ·.0,., _,