Signal Mirrors and Sunlight Reflection

The video tutorial explains how to use basic household items like CDs and mirrors to signal aircraft by reflecting sunlight. It describes the technique of angling the mirror to catch the sun and direct the reflection towards passing aircraft. The effectiveness of signal mirrors is highlighted, noting that they can be detected from up to 100 miles at altitude, with a typical range of 15 to 20 miles on a sunny day.

What items can be used to attract attention on a sunny day?

• A flashlight and a whistle

• A smartphone and a book

• A hat and sunglasses

• A CD and a piece of mirror

How should you position the CD or mirror to attract attention?

• Place it on a tree branch

• Hold it up to catch the sun and reflect it

• Wave it back and forth

• Hold it flat on the ground

What is the purpose of reflecting sunlight with a CD or mirror?

• To create a shadow

• To signal passing aircraft

• To start a fire

• To measure the time of day

Up to what distance can signal mirrors be detected at altitude?

• 150 miles

• 100 miles

• 75 miles

• 50 miles

Under normal conditions, within what range can a signal mirror be detected on a sunny day?

• 20 to 25 miles

• 15 to 20 miles

• 10 to 15 miles

• 5 to 10 miles