Richmond dispatch. [volume] (Richmond, Va.) 1884-1903, 1896-01-30

]
| fessor Rontgen holds "A high position
| the scientific word, and while hlmsl.
entirely beyond suspicion. he is elr
! GENTLY astute not 10 have been made
| victim OF others. There is no doubt fNt.
| the discovery he has made Is one
the utmost Importance. and It's uitlnl
! development I'm the fields Of physicsl
medical science may lead 70 the extcr.I
OF our knowledge over vast fields hlthr
4 undreamed OF
Another correspondent OF the tlr
| journal, Leslie Miller, gives his view
the matter as follows;
| To conclude. cathode rays are disfui.
| ances set up in the luminfer0us oxher b..
an electric current, which are ne.ta..
| light rays nor electric rays. but have 500.
| Of the properties Of both. They can
| detected by magnet, and are obstruc..
| by the molecules OF air and all ca.0.
| glass, metals, and other substanc n
| varying degrees, but quite differently
| light, as the substances that offer f..
! greatest obstruction 10 light may of
| little 10 them. They are also able. unI.
light rays 10 pass round an obstruction
Finally cathode rays are NOT all ai.k.
hey possibly differ in the same WAY tha.
| light does from violet, red. or green. eIr.
and il is probable that Professor Roa.-
sen has hit on particular number o.
vibrations or other quality having stroU'
chemical effects, and. therefore. OF hl.
portance photOgraphcally.
As regards the necessary apparaiu.
from the ..oint of view OF "a maker of SUCH
things, u Offers no particular difiru'.r
especially now that alternating curro.-
from street mains is az hand. 800 thf
transformers, 10 trans'0r up to t.
necessary tension. can be employed. 81
Lenard used a coil which save ab0u, al
inch spark In air between sphere. bft
the length Of the spark mobiles thr ra-
ture Of the rays, and from the increaseI
effects obtained hy Professor Ronts-r
ne must have made modification.
In more technical 81 Of the photo
sraphic importance III ihe new FORM 0'
radiant energy. T.. j. Wal. IN the Blu.l
Journal Of Photography says:
IL rs. OF course. well known that ri
haloid salts Of silver are not only -eu..
tive 10 light, but that invisible imaer
capable Of being developed are produce
by pressure, by e.ec,ricity. and hy 'arIou.
chemicals such. FOR instance. as tho De-.
pophosphites.
The following extract from Guillcmur
Electricity and Magnetism" page So.
edited by Professor Sy.yanus Thompson
Is not without interest o- bearing unor
this subject, as, az least. leading 10 con.
siderable speculation az 20 whether the.
last experiments OF Professor Routgeu
do not support the theory that the ace
ton Of light on the silver haloid is rot
rather photo-eiectricai than photo-cheini.
cal In speaking OF Faradays discover
Of the magnetic power Of magnets OH
light It Is stated that Clerk Maxwell de-.
duced the theory that light Itself
SIMPLY an electromagnetic phenomenon
that which We call waves OF light are not
mechanical waves az ALL but are ir
mensely rapid electric displacements tax.
ing the place In the all-pervedlrl
ether OF space IL is believed h..
the editor OF this work that this theor,.
which Is now IN the main accepted by
all the younger generation OF physicist.
VIII be able, with proper modihcatior
ana development, 10 explain the curious
relation existing between electricity ami
the phospofescent, huOrescent. and chem
zeal properties OF Isbt"
Crookes. in his presidential address 70
the British Associs,lon IN 1885. drew at
tention TO an extremely graphic ilustra,-s
ton OF the grouping OF the elements ac-
cording to the periodic law. and, roughly
speaking. this N ght be ikened 70 a.
pendulum with ever-decreasing amplitude.
and at various points the elements fall
into line being respectively electro-neca-
tive and eiectro-posItive. Thus tho four
haloids chlorine bromine, iodine. and
fiuorlne, are electromagnetic, while silver
j. electr0-positive.
This being the case then. might II not
happen that. accepting the electro-mag-
netic theory Of light as enunciated above.
q film Of silver h8lold may lie 90 affected
by the electric displacement called light
as to be disassOciatef2 Mnchin and
Waterhouse have proved the passage
Of a current Of electricity when light
falls on a film Of silver salts. and Alr.
Bolas. in his afliatlon lecture. suggested
that the developer might merely close an
electric circuit
A New York physician, who Is an ls-
dent and distinguished amateur photo
grapher, said yesterday that he Thought
one OF the great values q Professor
Rontgens discovery would be the impetus
which IL would give TO w.'k on color
photography. In his opinion o. was the
invisible rays At tire violet end OF tfe
spectrum which~kept color Photography
from being now IN eyerv-dlv use. What
he hoped from Professor Ron gems uis-
covery was that Dhotographic inventors
would be able TO use its) as 20 exclude
the Invisible rays "a )m the camera,