From: aria@hardy.u.washington.edu
Newsgroups: soc.culture.vietnamese
Subject: [misc] ddo^'
Date: 28 Aug 92 17:25:20 GMT
Article-I.D.: u.1992Aug28.172520.5231
Organization: University of Washington, Seattle


> trinh@twix.etdesg.TRW.COM (Tien Trinh) writes:
> Xin cha`o ca'c anh chi.

cha`o ba.n

>
> Co' ai bie^'t ta.i sao the sun ra^'t to khi mo.c vao` buo^?i sa'ng va`
> la.(n va`o buo^?i chie^`u. va` nho? vao` lu'c tru+a???????
> TT

ma(.t tro+`i ra^'t to khi mo.c va`o buo^?i sa'ng va` buo^?i chie^`u vi` lu'c
ddo' vi. tri' cu?a ma(.t tro+`i na(`m o+? du+o+'i vi. tri' quan sa't which is
you, my friend! thu+? tu+o+?ng tu+o+.ng ba.n ddang ddu+'ng tre^n mo^.t curve
surface (aprox. flat), vi. tri' cu?a ma(.t tro+`i na(`m o+? du+o+'i





                                            ozone layer, particles
                                                /    /    \
                                            /     /
                  trees,  you ..line of sight.../.....         \
         -----------------horizon...bie^?n xanh........
                                                          \ light ray
                                                              \
                                                                sun

all you see is the sun light wave oscilate hit the ozone layer and various
particles up above the horizon, bounce back to you an image as a huge circular
disk, hence the sun image is distort.

since the image is only sun light, you can look at it, if it is a real sun, you
bi. hu+ ma('t tu+` la^u ro^`i.  And if the sun is that big, you and I and
everybody, are dead meat! long long time ago....
samething happen khi ba.n nga('m ma(.t tro+`i la(.n, tre^n thu+.c
te^' thi` ma(.t tro+`i dda~ la(.n cu~ng kha' la^u ro^`i.
khi ma(.t tro+`i dda~ le^n cao, lu'c ba.n ngo' ma(.t  tro+`i, in general, the
light wave front hit directly to your eye, (ngo' hoa`i se~ bi. ca^.n, samething
happen khi ngo' ma^'y co^) so you won't see the true image either, but that
small circular disk is about the right side, from the earth/sun dist.look at the
Mar at night, eventhough it is close to earth but it appears as a silver penny.


ca^u ddo^' cu?a C.N.M.T.
PS. Another question for netters: the Sun is closer to the Earth
    during winters so why is it much COLDER during winters than during
    summers?  Ai tra? lo+`i tru'ng C.N.M.T. se~ bao mo^.t cha^`u Pho+?
    Hoa` hay Pho+? Xe Lu+?a ne^'u co' di.p ghe' Chicago :)) :))  Ne^'u
    C.N.M.T. happen to be  out of town when you come thi` ra'ng ma`
    chi.u ... he^` he^` he^` :)) :))


the earth travel around the sun in an elliptical orbit, the major and minor
axis of the ellipse is approx. equidistance.  If the major and minor axises are
signif. different in length, then in winter everybody will become frosty the
snowman or snowwoman, and mu`a he` everybody will become a roast ducks.  Since
earth orbit is almost round, only at the equator is the climate affected
by earth orbit, that is, most cool when it is farthest from the sun, hot when
it is closet to the sun, (ma^'y co^, ma^'y ca^.u ddu+'ng ga^`n nhau cha('c cu~ng
bear the same side effect!).  For earth region outside the equator, the climate
is affected by the earth own spinning orientation, that happen because the heat
travel from hot to cold,  earth axis of rotation is slant, if we live further
north from equator, winter is when axis of rotation (head is north pole) points
away from the sun va` C.N.M.T. o+? chicago se~ la.nh teo.., i' que^n, se~ la.nh
te tua,  hotest month is when axis of rotation point toward the sun.


the moon orbit is more complicated, as earth's satellie, its orbit is varies,
affected by the earth, sun, and neighboring plannets,  sometimes it comes close
to earth, some time it far away,  thus its size is varies.  Also, the sun light
ray hit the moon, as it is below or near the horizon, and reflect up toyour line
of sight,  that is when you see the largest moon,  (i.e image is distort)
same stuffs as the sun.

remember,  i only see something if the light ray hit that something, and
bounce back to my eyes.

Well, gia?i thi'ch nhu+ va^.y a(n pho+? ddu+o+.c chu+a va^.y.  ne^'u ddu+o+.c
thi`....thi`....ca'i solution above la` co^ng cu?a bx va` nguye^n mo^.t dda'm
nho'c ti` work out together ddo', Ne^'u ddu+o+.c pho+? thi` nay mai, bx va` lu~
nho'c ti` qua be^n chicago ca('m tra.i, se~ ghe' qua ho?i tha(m you nhe'.  No'i
tru+o+'c ha, tu.i nho'c co' gene a(n pho+? nhu+ anh va^.y ddo'.


ba^y gio+` bx xin ddu+o+.c ddo^' ca'c ba.n.
ta.i sao khi ba.n nhu'ng dda^`u chie^'c kha(n kho^ va`o thau nu+o+'c, nu+o+'c
se~ tu+` tu+` tha^'m ngu+o+.c le^n, water creeps up! isn't it against gravity?

.............bie^?n xanh....................................................


                                                           seahorse (papa)

         seahorse (mama)

                                 seahorses (babies)




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