New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1874-01-09
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Sff*99X Observation-Disclosures stl fN N
1 - \. S.I...cTtfT1f l4,l'" ..f1 /
~ g. Cont uuous ,necirum with 9sTs hre' 81 sodium.
.G a Innhl. hIigl1 hL.. tLG ,ncclInn ~ 40 hum.


w. 3 Cont 1gous spectrum with ars hire, 81 sodium.
Ff A. Double brighl bIo: tho spectrum of sohGm.
win show you diagram OF the solar spectrum. Yol
take the gn Of the aud you receive # through Ger
tam triangular pieces Of eass and the hight 81 me sun
II spreading into the rainbO streak. which streak
If crossed by multitude OF dark hines.
This picture, TO which now point Is picture OF the
solar spectrum. On further investigation II was found
that mcaDdescent body used as source OF !Ei ~
stead of having rainbow tinted streak crossed BY q
without any dark lines at an. on further inquiry II
was found that gaseous body gives spectrum dInei
Here il the spectrum given NY sodium ~ vapoTous
spectrum gwen by "A gaseous body
oRREsPONDEECE OF LIGHT WIN 1HE nrsirhL sCALE
I will now call your attention to q comparison
between these results and the musical scale. The red
Light corresponds with the bass and the purple with the
treble notes and then is rainbow united streak without
dark il the complete scale without breaks The
with the dark lines crossed by dark chords
II musician were To hear piano PLAYED IN another
OF his eight and he herd chord struck he
would know which II was ana ~ the same way II
you that gaseons light gives "a certain
kind of spectrum, the chemist knows What
lines OF The solar spectrum indicated vapors cooler than
tine suns and cutting of portion OF the suns light
which giving out quantity al Hghi, bnt being
cooler than The around winch they liz, they cut ond
portion OF his light. These are The DARK lines, ana the
only determine the exact position az
these lines 10 find out what clements are IN the sun
Thus iron copper and other elements known To rs were
discovered be 10 the vapoTods atmospheric surround
wcliknown German physicist came 10 the couclu-
that certain elements giving out the bright line
spectrum. the the pressure and
that lines correspond 20 those the
spcctrGEs. The research continued az the
Mint. where u II important IN CObneciOu with alloys OF
metals, aud d.. Henry Draper, 81 yOar country, viii
important light. through ms researches on the
condition OF the sun We Will now pass on 10 the solar
pJ0u.DeHCgs and solar corona.
SOLAR rR0aiNESCHs AND CoRo%A.
Il was observed that the hpots waved aud Vdued IN
number over the surface OF the sun, and after halfa
century Of research that the spots Increase and dnin
ish until they disappear altogether and that the period
within which they wax ard is about eleven OF our
wears After that was discovered IL noted that the
magnetic Influences of the earth wdxed and waned IN
ahou the same time The magnetic needle which points
in England 10 west of north, and in this
country not to due NORTH. las swayiug motion
a. II eudeayoriue move toward the -nn. That motion
uudercoes variations sometimes greater and sometimes
less and physicists watched. and they fond that In
about eleven years the swayng ~ the magnetic needle,
which war insignificant "a seem dltCdlt OF dctee.
ton Undergoes slight change which corresponds with
tue aQuber Qt spots on The SUI When tle spots are
greatest it las Its greatest sway, AMI when
The spots are fewest IL has the least sway.
The aurora also associated WIN the sun.
But he idence Influences marked and IL
came in 1859, when bTl2ht spot suddenly made us ap
pear;unce the sin. aud IL was found that the self
recording magnetic needle at Kew made certain Jumps
as IL we're approached In bOtn hCmispheres and
everything proved thai al that moment the sun had
given out magnetic Influences not to earth alone
but doubtless Mercury AMI Venus and Mars. then the
asteroids and 10 Jupiter aud SatdB. an" new bond OF
harmony had been found within tine "l,iT system.
IA uh0Ograp hic picture repre- 'ntl3- prominence
the auu mere exhibited