ASTRONOMY VISUAL ACCESSORIES

  • POWERS OF TEN

  • HOW MUCH IS 25:5 ?

  • ZOOMING IN and OUT IN THE UNIVERSE

  • LIVE EARTH VIEW FROM SPACE!!

  • VIEW THE SKY FROM ANY TERRESTRIAL CITY!!

  • SOLAR SYSTEM IN MOTION!!

  • ASTEROID GASPRA

  • COMET WEST

  • THE SCARY WHAT ?

  • THE SOLAR SYSTEM EDGE-ON

  • STARS IN CONSTELLATIONS: PERSPECTIVE

  • PROPER MOTION OF THE BIG DIPPER (URSA MAJOR)

  • PLEIADES: OPEN STELLAR CLUSTER

  • 47 TUC: GLOBULAR CLUSTER

  • ORION NEBULA

  • HORSEHEAD NEBULA IN ORION

  • M16 NEBULA (FULL VIEW): STAR FORMING PILLARS

  • M16 NEBULA (PARTIAL VIEW): STAR BIRTH CLOUDS

  • M57: PLANETARY (RING) NEBULA IN LYRA

  • CAT'S EYE (PLANETARY) NEBULA

  • CRAB NEBULA: SUPERNOVA REMNANT

  • M31 -- INCLINED DISK GALAXY IN ANDROMEDA (incl. M32 and NGC205)

  • M51 -- FACE-ON DISK GALAXY IN CANES VENITACI

  • M102 -- EDGE-ON DISK GALAXY

  • M104 -- ``SOMBRERO'' -- ALMOST EDGE-ON DISK GALAXY

  • NGC 1365: A BARRED DISK GALAXY

  • M87: ELLIPTICAL GALAXY IN VIRGO

  • NGC 7742: A SEYFERT GALAXY

  • A QUASAR IN THE FIELD OF GALAXIES AND STARS

  • GRAVITATIONAL LENSING IN CLUSTER OF GALAXIES

  • THE HUBBLE DEEP FIELD GALAXIES (A WEEK OF EXPOSURE!!)

  • 2 MILLION GALAXIES IN FILAMENTS AND VOIDS

  • NUMERICAL SIMULATIONS: FILAMENTS AND VOIDS

  • STELLAR PARALLAXES FOR CLOSER AND MORE DISTANT STAR

  • STELLAR PARALLAX

  • INVERSE SQUARE LAW

  • WAVES and LIGHT PROPERTIES

  • PASSING OF WHITE AND COLORED LIGHT THROUGH A PRISM

  • WAVES TRANSFER ENERGY, NOT MATTER!!!

  • GENERATION OF THE SOUND WAVES

  • GENERATION OF THE SOUND WAVES IN THE AIR

  • GENERATION OF SOUND WAVES: COUPLED OSCILLATORS (SPRINGS)

  • TRANSVERSE WAVES

  • WATER SURFACE WAVES

  • WAVE PASSING THROUGH ONE BIG SLIT

  • WAVE PASSING THROUGH ONE SMALL SLIT

  • WAVE INTERACTION (INTERFERENCE): ADDITION OF TWO WAVES COMING AT SIMILAR PHASES

  • WAVE INTERACTION (INTERFERENCE): ADDITION OF TWO WAVES COMING AT DIFFERENT PHASES

  • TWO WAVES TRAVELLING IN OPPOSITE DIRECTIONS

  • TWO WAVES TRAVELLING IN THE SAME DIRECTION: CONSTRUCTIVE AND DESTRUCTIVE INTERFERENCE

  • WAVE INTERFERENCE ? --- THE "CLASSICAL" WAY

  • WAVE-PARTICLE DUALITY

  • WAVE INTERFERENCE FROM TWO SLITS

  • WAVE INTERFERENCE FROM TWO SLITS LIVE!!! (YOUNG EXPERIMENT)

  • ANOTHER INTERFERENCE PATTERN

  • HOW TO CREATE ELECTROMAGNETIC WAVES

  • ELECTROMAGNETIC WAVES IN SPACE

  • ELECTROMAGNETIC SPECTRUM

  • CONTINUOUS, EMISSION LINE, AND ABSORPTION LINE SPECTRA

  • COMPARISON OF CONTINUOUS, EMISSION LINE, AND ABSORPTION LINE SPECTRA

  • PLAY WITH THE BOHR ATOM !!

  • BOHR ATOM

  • BOHR's THEORY OF THE HYDROGEM ATOM

  • EMISSION AND ABSORPTION SPECTRA OF ALL CHEMICAL ELEMENTS IN THE PERIODIC TABLE

  • DOPPLER EFFECT: PASSING CAR

  • DOPPLER EFFECT: JAVA VIRTUAL EXPERIMENT

  • F/A-18 HORNET IS PASSING THE SONIC BARRIER ON July 7, 1999!!

  • HOW TO FIND CENTER OF MASS

  • MOTION OF DOUBLE STARS (CIRCULAR)

  • MOTION OF DOUBLE STARS (ELLIPTICAL)

  • MOTION OF SIRIUS A and B

  • MOTION OF SPECTROSCOPIC BINARIES

  • MOTION OF ECLIPSING BINARIES (ALGOL SYSTEM)

  • PROPER MOTION OF BARNARD STAR

  • LIST OF STARS WITH VERY LARGE PROPER MOTION