Awe and Wondera Scientific, Mathematical and Spiritual Journey

presented by Steve Kliewer

Total Solar EclipseCoral Sea Nov 14, 2012

Topics

• Total Solar EclipseCoral Sea - Nov 14, 2012

• Solar Eclipse videos (5 min)

• Upcoming Attraction – Aug 2017

• The Sun-Earth-Moon System

• The Geometry of Shadows

• Lunar Rhythms

• Eclipse Features

MS Oosterdam

Eclipse Particulars

Nov 14, 2012 Our position in the Coral Sea was at:

S 22 18m, E 158 Totality: 2m 40s

Sunrise = Sun Altitude=291st contact: 06:50 a.m. Sydney DST = UTC+112nd contact: 07:48 a.m.3rd contact: 07:51 a.m.4th contact: 08:58 a.m.

Umbral velocity 750 m/sUmbral Diameter 160 km

TSE2012 Mercator Animation

Eclipse Features

• Contacts: First, Second, Third, & Fourth

• Partial Phases: Pinhole images, Cooling, Animal Behavior, color of landscape, Venus

• On the Brink: Shadow bands, Sunset colors, approaching

shadow, Bailey’s Beads, Corona?, Diamond Ring

• During Totality:

•Corona: petals to side, brushes at poles (sunspot minimum)

•Chromosphere: spiny, deep ruby red layer

•Prominences: pink flames or loops

•Stars and Planets: Mercury, Venus, Mars

Key Points

Eclipse

Eclipse

Gathering Gloom

See movie

Excitement Builds

See movie

Total Eclipse of the Sun

http://www.nasa.gov/mission_pages/sunearth/news/eclipse-20121113.html

Aug 21, 2017 2m 40s - Oregon to N. Carolina

See movie

Geometry and Rhythm

The Sun-Earth-Moon System

• Both the Sun and Moon are 1/2 in diam.

• This is the same as a dime held at 6 1/2 ft.

• Our horizon rotates 15/hr.

• The Moon moves 1 diameter / hr (2500 MPH) thru stars.

• The Moon rises 50 minutes later each day.

• The Earth moves 8 diameters / hr(65,000 MPH) around the Sun.

Key Points

The Geometry of Shadows

• Umbra is the area of full shadow.Total Eclipse

• Penumbra is the area of partial shadow.Partial Eclipse

• Antumbra is the region beyond the Umbra. Annular Eclipse

Key Points

To Sun

Lunar Rhythms

• Synodic Month 29.5 days(full to full)

• Revolution Period 27.3 days

• Rotation Period 27.3 days

• Draconic Month 27.2 days(crossing the ecliptic)

• Anomalistic Month 27.6 days(closest to closest)

• Saros Cycle 18 yrs 11.32 days(223 synodic months)

Lunar Rhythms

• Solar Eclipses require a New Moon.

• Lunar Eclipses require a Full Moon.

• The Moon’s orbit is tilted 5° (9 diameters)

• Four primary rhythms:New to New, rising and falling, in and out, & yearly seasons

• Eclipse Seasons occur every 6 lunarmonths because of the first two rhythms.

• All four rhythms repeat every 18 years.

Key Points

Um

bra

Penum

bra

Cabo San Lucas

Mazatlan

Mexico City

July 11, 1991

Feb 26, 1998

Aug 14, 1999

Mar 29, 2006

Nov 14, 2012