Ch. 10 The Sun: Our star
Only star whose structure can be seen in detail!
R ~ 700,000 km = 109 Re
M = 1.99 x 1030 kg = 332,000 Me = 99.9% Msolarsystem
Mean density = M/ (4 R3/3) = 1.41 g/cc
Lighter than the Earth!
Standard unit for mea
The Sun as imaged in neutrinos!
Solar neutrino problem:
Experiment in the Homestake mine in South Dakota by Ray Davis.
Searches for solar neutrinos kept finding fewer neutrinos than expected (by factors of 2 to
Major controversy about
Review for Test 2
Small Angle Equation:
Angular size of an object of diameter d at a distance D is given by
= 2.06 x 105 d / D arcsec
(valid for small angles-numerator is much smaller than denominator)
Mechanics and Gravity
Newtons laws of motion
How does Earths atmosphere affect the planet?
Why is our sky blue?
Why is our sky blue?
Blue light is scattered more than red light by air molecules.
Is the sky blue everywhere?
Sunset on Mars as seen by Pathfinder
What is the consequence of roughly equal angular sizes for the Sun and the Moon as seen
from the Earth?
What do you think decides the duration of the total solar eclipse?
Not all total solar eclipses last for the same duration. The one on July 22, 2009 la
Ice coating cracked by tidal forces. May have liquid water ocean underneath.
Europa also shows a very diffuse O2 atmosphere! But not of biological origin.
Formed from dissociation (break-up) of H2O molecules by solar radiation,
What are jovian planets made of?
Jovian Planet Composition
Jupiter and Saturn
Mostly H and He gas
Uranus and Neptune
Mostly hydrogen compounds: water (H2O), methane (CH4), ammonia (NH3)
Some H, He, and rock
Jovian Planet Form
High pressure inside of Jupiter causes the phase of hydrogen to change with depth.
Hydrogen acts like a metal at great depths because its electrons move freely.
The core is thought to be made of rock, metals, and hydrogen
Earth and the Terrestrial Worlds
Terrestrial worlds near us
Craters, cliffs, Volcanoes, Craters, plains Craters, riverbeds? plains craters
What makes the Earth different from the other terrestrial planets?
Earth is a living planet!
(It is the mo
Ch. 2 Celestial Navigation
NW N NE
But how do you find Polaris?
Polaris Big Dipper
88 in total
Constellation of Orion
Are the stars in a constellation physically close or associated?
3-D of Stars in Orion
What do we need to measure
Aurora on Oct. 24/25 2011
Alberta, Canada Grand Portage, MN
What processes can shape a planets surface?
Geological Processes Besides Plate Tectonics
Impacts by asteroids or comets
Surface changes made by win
Shadow Story 10
November 19, 2012
Forward in Reverse
It really struck me when the irony of the rearview mirror was made note of. As we
are driving forwards we are constantly checking what is behind us and looking in the
opposite direction. Our sight and c
Shadow Story 6
October 24, 2012
Divorced parents kid syndrome; weve all seen it. At some point in the coping
process there is blame inflicted upon one or both of the parents. Most encounter these
phenomena themselves or have had a friend
Shadow Story 7
October 30, 2012
Fleeing the Betrayal of Trust
We often betray the ones we trust the most. This phrase is most commonly used
with love, but shouldnt love and trust be interchangeable? Successful love requires a
degree of trust. I am not spe
November 1, 2012
Shadow Story 9
Emotional Lines between Want and Need
My family has always considered melodramatic and Hannah synonymous. Time
and time again I find myself completely exasperated trying to communicate a desire for
something. This something
Shadow Story 5
October 21, 2012
The Fixing complex
From a young age I have always expounded on my passion to help others. Preschool aged little girls would dig out boas and fabulous attire from the dress-up chest
while others donned aprons to flip plastic
Shadow Story 3
October 3, 2012
Hammering out the Hammer Story
Perhaps the most applicable of stories to my life is the hammer story
phenomenon that I seem to experience time and time again. The dissection and
application of this story will enlighten and h
Shadow Story 2
September 20, 2012
The Series of Projections
Light beams dance around the arena, syncing and morphing colors and intensities
to the notes and rhythms of the musics melodies. In this moment it is not the sounds that
have me mesmerized, but t
September 10, 2012
Shadow Story 1
Exploration of the Anchoring Source
Fear. I feel as if it cannot be a pure dream when it is tainted with this shadow of
fear. Independence has always been a word my friends choose to describe me with. But is
Shadow Story 8
November 4, 2012
Friendship Caught on Fire
A greater aura, a mystifying union, an orb of sweet perfection- whatever we
relentlessly prevail to name this thing between us, together we make something greater
than weve ever been able to autono
November 25, 2012
The Final Reaction of the Beginning
In order to seek an outlet of creativity and self-reflection, journaling has always
been a calming, stress reliever for me. Each entry I expound upon is a story of recounting
HISTORY OF JAZZ AND POP
ELEMENTS OF MUSIC
ELEMENTS OF MUSIC 1 OF
MUSIC= the organization of sound in time
SOUND = a vibration of a physical medium perceived by the ear
VIBRATIONS produce waves
WAVES can be represented by a sine curve
AMPLITUDE = wave height
FREQUENCY = WAVE LENGH = Speed of vibra
Jazz lecture 4
Tin Pan Alley- 1890s
music as commercial product
19th Century Pop songs lyrics dealt with
simpler than true Ragtime
Hello My Baby
Lyrics- new attitude-not
EARLY TIN PAN ALLEY
TIN PAN ALLEY name given to Pop Song Industry from the1890s to the 1950s
nickname given to 28th St in Manhattan where many music
publishing houses were located
1890s - beginning of mass marketing Pop Songs
Pop Music as a commercial pro
invented by Black American slaves on plantations in the mid-19th Century
African Vocal Practice
Expressive inflection of pitch
sliding between notes
bending of pitch
non-tempered notes - singing in the cracks
Forerunners of blues
field holler- solo song- no sense of beat
wild ox moan
work song- group song - strong beat call and response
spiritual original hymns of Black Americans
is there anybody here that loves my Jesus