Suppost you have a sphere. The inside surface of the sphere is a perfect mirror. What does the reflection on the mirror look like if an object -- say a book or a teddy bear or a pineapple -- is hovering inside the sphere at its exact center?

Is the entire mirrored interior surface of the sphere covered with a reflection? Is every point on the mirrored interior surface of the sphere reflecting a point on the surface of the object in the center?

Will there even be a reflection? There's no light source in the sphere, so do we have to assume a light source in the sphere someplace? How does that change the reflection (some points of the inner surface of the sphere will be in shadow if the light source is inside the sphere)?

Can the light source be external, e.g. a the sphere is a two-way mirror?

2006-07-22 01:06:39 · 6 answers · asked by fixion 1 in Physics

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Why is there usally a thunderstorm after very hot weather?

2006-07-22 00:58:31 · 13 answers · asked by AdamB 1 in Weather

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can you learn me how can i make a fixing agent for reactive and direct dyes..and thaks?

2006-07-22 00:52:26 · 3 answers · asked by justhallaj 1 in Chemistry

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What would aliens from another planet think of us?

I've heard conspiracies that they walk among us and we don't even know it because they look just like us. If this were true, frankly, I'd be a bit embarrassed. I’m sure they’d think we’re contributing to our own demise.

2006-07-22 00:45:51 · 21 answers · asked by Anonymous in Astronomy & Space

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how many year will turtle live?

about natural science

2006-07-22 00:39:20 · 9 answers · asked by bhavu 1 in Other - Science

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sir Isaac Newton once made a model of a wind mill', which could sail without even there was no wind.HOW?

As a boy sir Isaac Newton once built a model of a windmill, the sail of which which would turn even when there was no wind. His elders looked on him and his toy somewhat warily:was it possible that the young lad had dealings with the forces of evil?

2006-07-22 00:37:29 · 3 answers · asked by SANJU 1 in Physics

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I need formula......................?

asume the question i asked in http://answers.yahoo.com/question/index;_ylt=Ao3laV7GIjkPtqM8lMify1rsy6IX?qid=20060721064648AAYmy6s
was rephrased as follows how would you solve it? i need aformula. I need to understand how to solve these kind of problems.
(a) 2 boys can dig 5 wells in 3 days. how many boys can dig 5 wells in 2 days.
(b) 2 boys can dig 5wells in 3 days. how many days can 3 boys dig 5 wells
(c) 3 boys can dig 5 wells in 2 days. how many days can 2 boys dig 5 wells.

2006-07-22 00:33:13 · 7 answers · asked by Omar 1 in Mathematics

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