b) What efforts will you make to remove
the misconceptions about eclipses?
c) Various eclipses and the conditions
during that period,
Explain the difference
a) Point sources and extended source
of light
b) Umbra and penumbra,
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Answer:
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Secondary School
Social sciences
5 points
What efforts will you make to remove the misconceptions about eclipses
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byDipsemail7343 06.02.2018
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Shaizakincsem
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Total solar eclipse produces harmful rays that can cause visual impairment:
There is nothing in the coronal light that could cross 150 million kilometers of room, enter our thick environment, and cause a visual deficiency.
Eclipses will harm any food that is set up amid the occasion:
In the event that that was the situation, similar radiations would hurt the sustenance in your pantry, or products in the field. The essential thought is that total solar eclipse are startling and their spooky green coronae look terrifying, so it is normal to need to make up dreadful stories about them and search for fortuitous events among occasions around you.
There are no total solar eclipses at Earth's North or South Poles:
Actually, there is nothing particularly interesting about these areas from a galactic outlook.
The moon turns totally black amid an aggregate sun-powered obscuration:
In spite of the fact that it is hard to see the New Moon and look at this thought, we don't really need to mention this troublesome objective fact.
Solar eclipses a half year after your birthday, or on your birthday, are an indication of approaching terrible wellbeing:
There is no physical connection between a total eclipse based obscuration and your wellbeing, any more than there is a connection between your wellbeing and another moon.
Answer:
Light Why is there a shadow with both umbra and penumbra when the light source is larger or there are more than one light source?
- Anonymous (age 13)
Toronto, On
A:
Umbras and penumbras are the names for two kinds of regions in a shadow that have different amounts of light in them. An "umbra" is the part of the shadow where all of the light from the source is blocked by the shadowing object. A "penumbra" is that region around the umbra where the shadow is only partial, or imperfect. You get these when the light source is larger than a single point. These form because while some of the light from the source gets blocked by the shadowing object, not all of it does. If you are in the penumbra looking towards the light source, you will see part of it visible, and part of it blocked. A point light source will either be all visible or all blocked, but an extended source can be partially viewable beyond the edge of the shadowing object. The same is true of multiple sources.
Photographers often used point light sources when they want shadows in their pictures with sharp edges on them (that is, without penumbras), and multiple or extended sources to make the shadow edges "fuzzier" or "to fill in the shadows with light". The sun is a very large source of light and it does not cast sharp shadows because of its size. Here is a diagram of the umbra and penumbra regions of the sun and the moon.