Quick Answer
To effectively utilize light and dark in navigation, one should take advantage of sunlight during the day, use shadows to estimate direction, and employ night navigation techniques such as using stars, the moon, and artificial light sources. Understanding the phases of the moon and the rotation of the stars can help you navigate in the dark.
Utilizing Sunlight and Shadows
When navigating during the day, use the sun’s position to estimate direction. In the northern hemisphere, the sun rises in the east and sets in the west. Use a stick or a makeshift compass to draw a shadow at solar noon, when the sun is directly overhead. Mark the end of the shadow with a small rock or stick. Wait for a few minutes and mark the new end of the shadow. Draw a line between the two marks and it will be approximately south. This method is called the “stick method” and can be used to estimate direction in the absence of a compass.
Night Navigation Techniques
At night, use the stars to estimate direction. The Big Dipper is a useful navigation aid as it is easy to identify and its two stars at the end of the “bowl” are approximately aligned with the North Star (Polaris). Use the North Star to estimate direction by drawing an imaginary line through the two stars and continuing it to Polaris. The North Star is approximately aligned with the Earth’s axis and will remain stationary in the night sky while the other stars appear to rotate around it. Additionally, use the moon to estimate direction by noting its phase and position in the sky.
Artificial Light Sources and Reflection
In addition to natural light sources, use artificial light sources such as flashlights or headlamps to navigate at night. Shine a light on the ground in front of you and observe how the light reflects off any nearby water or vegetation. This can help you identify the direction of nearby water sources or travel routes.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.