The evening world. [volume] (New York, N.Y.) 1887-1931, 1912-09-13
GOWN TO CHANGE
ITS HUE WHILE
I GIRL WEARS It
Chemically Treated Dress Is
Yellow in the Dark, Red
in Sunshine.
Old FROCK EVER NEW.
Scheme to Enable Women to
Change the Style in
Half a Second.
Old FROCK EVER NEW.
MGresssstte Mooers Mavslsll.

010ssssite Mooevs Mavshsll.
~ wDsaa ysa hAs . ssssk
O01A fssn yellow he - ~
ons1neO q yeus s1essA sAaa6s1
OUognv - . bsi1llAns, g1sVtnS ssA
- ~ sss1Dsa ont isss TIE san
on1nOe
Jnot such an sys-opener 10 the last
Vesa q fasfaou for the future" accord.
~ - Prof. 0iscomo Ciamician u the
uh1vsrsity Of Bologna. Italy. Prof.
Com6elan hes come from Euncps's cd
- university to tell the Eighth Intsr-
1n0saal Consrsss Of Applied Chemistry.
~ meeting ct the College Of the cry
- Wsv York. about the photoohsmistry
- - future. And not the least OF his
pg9Uost1c marvsls y the chameleon
OUWA. wAlcA viii certainly make Broad
~ ~ - and take notice whom Il does
seosss.
y Aas bssn thoroughly established
~ Oodssn Industry 10 aSirstsd very
ln1Daesly with pure science" explained
- pssesasor. IA present the so-csiied
p4seesrsp1e substances are but objects
- lA6ogatogy study. But Il seems to me
- n y only . question Of time when
~ commercial utility Will be dis
sovsrsd and established"
ooMgTnlNo ABOUT PHOTO.
rRoPic sueSrANcG.
WAae aad Why y phetotropic sub
anossr' asked.
"A fuli explanation would b. impossi.
~ oomplioatsd for eli who are not
SAsa1ssa." ths professor replied frankly.
nat psrhaps I can givs you an idea
1oses ars osrts1a substances. chemical
oenbaaatioAa whioh react to light IN .
v9y sDsoial manner. Thsir names would
oaaa neth1ag 10 the general public, buf
~ Soto0g 70 the aromatic series Of
u)esss ~ nieroslneie compounds. In
~ logk thsss substances are some
1920 q ysalew o. orange. Brought into
~ bslg&e light they change to red.
nsla6e1uesd into darkness they 70
hask - their original yellow.
IAs light change to red 10 sxcs,d-
iao1v rapid. cay . second In dura ton.
Ths shaAge taking place In the DARK
49, y soever. occupying about half q
sn1aueA THIS y the only color change
~ l1eeovere1. although II 10 possible
~ ether compounds may be found In
vo30 other unts Interchange In q sim.
uoP reaction. The chemical explanation
. - ths shifting Of tints IL that the light
snoogss The molecular formation Of the
efy0eAaa Theoretically. the same sub-
stances may b sxpsrimented on In
deonitsly. and the reaction to hxht and
Assensss win b. the same. Even In
Draetics n hes been found that the
change never fails TO take place In the
subjsee Of countless experiments, al.
theugh After long time II 10 q little
slower N Ne coming and soing.
~ Tar 10 solutions Of these Sub.
STANCES have bssa prepared In a way
whioA permits thsm to DO used a. dye.
SIAN. tsausssrring their power Of 70.
action 70 some other suhstance. Bul
u oesas practicable that such dyes MA,
- constructed By means Of ether OF
seos other liquid solvent. Then, 10 4
1i0At 1lm Of the solution be spread
ovo he surface Of . garment thor,
eeemo reason 70 believe that Their,
ueah - an AFFECT Of color change IL
he parpsut itself when exposed 4
bstDos Nsht
WOULDN'T " TEAR the pREsl
70 TArrERof
VERY encouraging experiments hay
already been made with diasoic CON
pounda and mention should be mai
Of . recent observation that nitro
soaAvhthyahydroxylamins Ii change
on IL abes to osoxynsphthaiene whe
sSDooe1 - light
'9r.sxsetly" I assented. as tho Pre-
fesDss paused for mach-needed breath
n1ewevsS. hs didn't seem 10 need It q
badly ~ yeu and ! would. after sus