Factors such as the length of class periods and bell schedules may require you to split this work between classes. The eclipse will last between two and three hours, depending on your location.Depending on the number of available mobile devices, students can work individually, in pairs or in small groups.This can be accomplished by creating an obtuse angle with the phone and a flat, level surface that is the measure of the Sun altitude angle plus 90 degrees – See Procedures, Step 4. Students need to point their mobile device so that the surface with the light sensor (usually the screen side of the device) is perpendicular to direct rays of the Sun.Prior to the eclipse, students should find a location at school that will not be shaded by trees, buildings or other objects during the time of the eclipse and will allow sunlight to reach the mobile device unobstructed.For more information on safe eclipse viewing, visit the NASA Eclipse website. Do not look at the Sun through your phone’s camera or view the partial eclipse without certified eclipse glasses or a solar filter. Safety Note: Do not look directly at the Sun.Protractor, protractor app or bubble level app with degree readingsĮclipse Measurement Data Sheet – Download PDF Management ![]() Mobile devices with light sensors (standard on most mobile/smart devices) They will then use mobile devices to measure lux before and during the eclipse to examine the impact a solar eclipse has on the energy received at Earth’s surface. ![]() Students find the Sun’s location in the sky for different points in time during an eclipse. For related resources in Spanish, see the Explora Más en Español section below.
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