Eclipses Shadows Umbra - the darker part of a shadow where all the light is blocked Penumbra - a...

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Eclipses Eclipses

Transcript of Eclipses Shadows Umbra - the darker part of a shadow where all the light is blocked Penumbra - a...

Page 1: Eclipses Shadows Umbra - the darker part of a shadow where all the light is blocked Penumbra - a partial shadow These terms also apply to Solar Eclipses.

EclipsesEclipses

Page 2: Eclipses Shadows Umbra - the darker part of a shadow where all the light is blocked Penumbra - a partial shadow These terms also apply to Solar Eclipses.

ShadowsShadows• Umbra - the darker part of a shadow

where all the light is blocked

• Penumbra - a partial shadow

• These terms also apply to Solar Eclipses and Lunar Eclipses.

Page 3: Eclipses Shadows Umbra - the darker part of a shadow where all the light is blocked Penumbra - a partial shadow These terms also apply to Solar Eclipses.

Penumbra

Umbra

Partial Shadow

Full Shadow

Solar Eclipse

Sun

Moon

Earth

• A solar eclipse occurs when the Moon passes in front of the Sun.

Page 4: Eclipses Shadows Umbra - the darker part of a shadow where all the light is blocked Penumbra - a partial shadow These terms also apply to Solar Eclipses.

Lunar Eclipse

Sun

EarthMoon

• A lunar eclipse occurs when the Moon passes into the Earth's shadow.

Page 5: Eclipses Shadows Umbra - the darker part of a shadow where all the light is blocked Penumbra - a partial shadow These terms also apply to Solar Eclipses.

Questions

• Which type of eclipse is dangerous to view with the unprotected eye?

• Why are lunar eclipses more commonly seen than solar eclipses?

*

Page 6: Eclipses Shadows Umbra - the darker part of a shadow where all the light is blocked Penumbra - a partial shadow These terms also apply to Solar Eclipses.

You will observe a total eclipse of the sun when...

(a) you stand in the penumbra of the moon’s shadow

(b) you stand in the umbra of the moon’s shadow

(c) sunlight diffracts around the moon

(d) sunlight reflects from the moon to the earth

(b) you stand in the umbra of the moon’s shadow


Penumbra Deep Shadow Maps

Penumbra Deep Shadow Maps

Solar and Lunar Eclipses - Dearborn Public Schools · Types of Lunar Eclipses • Total Lunar Eclipse – when the Moon passes completely into the Umbra, or total shadow of the Earth.

Solar and Lunar Eclipses - Dearborn Public Schools · Types of Lunar Eclipses • Total Lunar Eclipse – when the Moon passes completely into the Umbra, or total shadow of the Earth.

Penumbra digital sunum

Penumbra digital sunum

PROCEEDINGS OF SPIE...Such total penumbral eclipses are extremely rare because the ring of the penumbra is approximately as wide as the diameter of the moon. Moments or Phases during

PROCEEDINGS OF SPIE...Such total penumbral eclipses are extremely rare because the ring of the penumbra is approximately as wide as the diameter of the moon. Moments or Phases during

disco penumbra

disco penumbra

Solar Eclipses Umbra – region of total shadow Penumbra – region of partial shadow Totality lasts only a few minutes! Why isn’t there a solar eclipse every.

Solar Eclipses Umbra – region of total shadow Penumbra – region of partial shadow Totality lasts only a few minutes! Why isn’t there a solar eclipse every.

¿CÓMO SE PRODUCE UN ECLIPSE? · de eclipses: eclipses solares y eclipses lunares. Geometría de un Eclipse Solar No está a Escala. Tipos de Eclipses Solares. HISTORIA DE LOS ECLIPSES

¿CÓMO SE PRODUCE UN ECLIPSE? · de eclipses: eclipses solares y eclipses lunares. Geometría de un Eclipse Solar No está a Escala. Tipos de Eclipses Solares. HISTORIA DE LOS ECLIPSES

What Causes a Lunar Eclipse? - Studyladder · a penumbral lunar eclipse occurs. The Earth casts a shadow over the Moon. The umbra is the darkest part of the shadow. The penumbra contains

What Causes a Lunar Eclipse? - Studyladder · a penumbral lunar eclipse occurs. The Earth casts a shadow over the Moon. The umbra is the darkest part of the shadow. The penumbra contains

Read-Around-A-Theme: Solar Eclipses · Read-Around-A-Theme: Solar Eclipses This map shows the path of the moon’s umbral shadow – in which the sun will be completely obscured by

Read-Around-A-Theme: Solar Eclipses · Read-Around-A-Theme: Solar Eclipses This map shows the path of the moon’s umbral shadow – in which the sun will be completely obscured by

Penumbra, Inc.

Penumbra, Inc.

1 Eclipses What is an eclipse? –Any time one astronomical object casts a shadow on another we say that an eclipse is occurring. The Earth can cast a shadow.

1 Eclipses What is an eclipse? –Any time one astronomical object casts a shadow on another we say that an eclipse is occurring. The Earth can cast a shadow.

Eclipses (23). Eclipses occur when the moon or sun moves into the moon’s or Earth’s shadow. Parts of a shadow: –Umbra: total shadow – complete eclipse.

Eclipses (23). Eclipses occur when the moon or sun moves into the moon’s or Earth’s shadow. Parts of a shadow: –Umbra: total shadow – complete eclipse.

Penumbra Overture

Penumbra Overture

Solar and Lunar Eclipses Eclipses. Solar Eclipse During a solar eclipse, the moon blocks our view of the Sun. It only happens during a new moon. The shadow.

Solar and Lunar Eclipses Eclipses. Solar Eclipse During a solar eclipse, the moon blocks our view of the Sun. It only happens during a new moon. The shadow.

Eclipses. SOLAR ECLIPSES Solar Eclipse- caused by the moon making a small shadow on the Earth. –Moon crosses in front of the sun. –Moon is in a new moon.

Eclipses. SOLAR ECLIPSES Solar Eclipse- caused by the moon making a small shadow on the Earth. –Moon crosses in front of the sun. –Moon is in a new moon.

ACTIVIDAD EDUCATIVA. Medición de los cambios atmosféricos ... · los eclipses se producen a lo largo de la eclíptica. Figura 2: Diagrama de las zonas de umbra y penumbra en un

ACTIVIDAD EDUCATIVA. Medición de los cambios atmosféricos ... · los eclipses se producen a lo largo de la eclíptica. Figura 2: Diagrama de las zonas de umbra y penumbra en un

What are lunar eclipses? Shadows are… When you walk outside on a sunny day, you can see your shadow. A shadow is formed when an object blocks a light.

What are lunar eclipses? Shadows are… When you walk outside on a sunny day, you can see your shadow. A shadow is formed when an object blocks a light.

Penumbra Deep Shadow Maps Jean-Francois St-Amour, LIGUM – Université de Montreal Eric Paquette, LESIA - ETS Pierre Poulin, LIGUM – Université de Montreal.

Penumbra Deep Shadow Maps Jean-Francois St-Amour, LIGUM – Université de Montreal Eric Paquette, LESIA - ETS Pierre Poulin, LIGUM – Université de Montreal.

Reshaping Penumbra

Reshaping Penumbra

Penumbra Maps: Approximate Soft Shadows in Real-Timecs5610/handouts/PenumbraMaps.pdf · 2003-10-20 · which extends current shadow map techniques to interactively approximate soft

Penumbra Maps: Approximate Soft Shadows in Real-Timecs5610/handouts/PenumbraMaps.pdf · 2003-10-20 · which extends current shadow map techniques to interactively approximate soft