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The waves get wider and dimmer as they move.
By projecting imaginary lines from the light source to the object, you can explain this geometrically. The closer the light source, the wider the angle formed between the lines, and the wider the angle, the longer the line opposite will be.
The wider base acts as an anchor and foundation. Objects that are wider at the top are "top heavy" and tend to fall over. You can't fight gravity.
The answer is simply a matter of angle and perspective. When the light source is close to the item causing the shadow, the angle that the item covers is much wider, thus casting a larger shadow. As the light source moves back from the item, the perspective changes and the angle that the item covers is much less, thus reducing the size of the shadow.
What effect is more responsible for the changing of the seasons, most notably, what is responsible for the climatic difference between summer and winter? Is it because the earth is closer or farther away from the sun at different, recurring times of the year? Or is it due to the angular tilt of the earth on its axis, in relation to the sun, at different times of the year? A: The earth is actually closer to the sun on average during the winter than in the summer. This is almost counterintuitive. However the tilt of the earth, is what makes the geography colder, winter-ish, because the light from the sun become less direct, creating a wider, longer beam of light. Light from flashlight beam that is directed perpendicularly (at 90 degrees) on a projection screen with create a beam of greatest luminosity or light intensity or power. However when lowering the elbow and angling the light at a smaller angle like 45 degrees, the beam changes from circular to an oblong line of the same width, but of less intensity or brightness than the circular projection. This is analogous to the change in seasonal temperatures during the earth's annual cycles, or what we call our seasons.
The waves get wider and dimmer as they move.
The waves get wider and dimmer as they move.
The waves get wider and dimmer as they move.
is wider on the exit side
Since the Earth is on an axis, the distribution of the light on Earth varies throughout the year. For example, when you hold a flashlight directly over the floor, the light given off by the flashlight is concentrated in one spot. If you were to hold that flashlight at an angle on the floor, the same amount of light is present but it is stretched out over a wider space. The Northern Hemisphere is tilted away from the Sun during Winter and the Southern Hemisphere is tilted towards the Sun giving them Summer. This is a straight forward article about it http://www.mountainnature.com/Climate/WhatCausesWinter.htm and you can search for diagrams of Earth's orbit to help understand it all a little bit more.
This question cannot be answered until we know what the two trees are.
It's hard to explain this in words but here goes.There are two ways a shadow changes size based on the position of the light source.If the light is just above and in front of the object the shadow is long, but as the light moves above the object the shadow gets shorter and shorter and shorter until when the light is directly above the object there is little to no shadow at all.If the light is directly in front of an object, like a person, as the light gets closer the light rays can only get past the object at a wider and wider angle (out to the sides) so the area with no light (the shadow) becomes wider and wider.
By projecting imaginary lines from the light source to the object, you can explain this geometrically. The closer the light source, the wider the angle formed between the lines, and the wider the angle, the longer the line opposite will be.
Your average supermarket should sell LED flashlights. They are available and Tesco, Asda, Morrisons, Sainsburys and other shops. Specialist camping stores such as Millets will offer a wider variety.
Evaporation, the wider process of water moving through the plant and being lost through the leaves however is called transpiration.
because the iris allows you to see in dim light
no I can't think of a single example of anything that opens wider to allow less to enter.