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A point source of light casts only a simple shadow, called an "umbra". ... The length of a shadow cast on the ground is proportional to the cotangent of the sun's ...

Online calculator: Shadow length


This simple online calculator gives a vertical object shadow length for specified day and geographic coordinate. The calculator uses Sun position algorithm to ...

SunCalc - sunrise, sunset, shadow length, sun position, sun phase ...


Online application to ascertain the sun movement with interactive map, sunrise, sunset, shadow length, sun position, sun phase, sun height, sun calculator, ...

SCSA Shadow Length Calculator - Walter Sanford


Shadow Length Calculator. Use the SCSA Shadow Length Calculator to calculate the length of your shadow: Measure your height. For a specific date and time, ...

Solving Proportions: More Examples - Purplemath


A very common class of exercises is finding the height of something very tall by using the daytime shadow length of that same thing, its shadow being down ...

Daytime Shadows | National Schools' Observatory


Shadows are created when an object, such as the stick below, blocks out some of the Sun's light. The length of the resulting shadow depends on how low or ...

Find My Shadow


It also alows you to see the shadows that are cast by objects you can specify in the ... for a particular date, and the direction and length of the shadows it casts.

Light and shadows: Shadow-tracing - The Earth and Sun ... - Learn NC


In this lesson, students will go outdoors at three different times during the school day to measure the lengths of their shadows. After recording how their shadows ...

Solving Triangles - Math Images - Math Forum


May 29, 2012 ... The length from the tip of the shadow to the point on the surface where the object stands can be viewed as the first leg, or base, of the triangle, ...

a 5 foot vertical pole casts a 3 foot shadow a tree casts a 20 ... - Tutors


This is a proportion problem. We will use the ratio of object height to shadow length. For the pole, the ratio is 5 ft:3 ft. Since the height of the tree is unknown, we ...

Popular Q&A
Q: How to measure a shadows length?
A: If you know your height and the height of the other person, then length of that person's shadow is. L2 = L1*H2/H1. Where: L2 is the length of the other person's... Read More »
Source: answers.yahoo.com
Q: Why is there a change in shadow length in winter?
A: Due to the tilt of Earth, on it's axis, the sun's path is lower in the sky, during winter. This makes our shadows longer in the winter. In the summer, the sun i... Read More »
Source: answers.yahoo.com
Q: Why shadow length changes during the year?
A: Shadow lengths change during the year because the Earth Rotates. When the Earth rotates it tilts meaning the sun would be on a different angle at different time... Read More »
Source: wiki.answers.com
Q: Why do shadow lengths change thoughout the year?
A: because the earth is "tilted" 23.5 degrees. So, when earth rotates around the sun, it is either tilted closer, or farther away from the sun. For example, in sum... Read More »
Source: wiki.answers.com
Q: How does the time of day affect a shadows length.
A: The sun rises in the east and sets in the west. As the Earth rotates the shadows will change direction and length depending on the angle of the sun. For example... Read More »
Source: www.answers.com