But just as you might need a ruler to measure a distance, you can use a tool to measure precise units of light. For example, did you know you can measure light? You might describe light levels relative to other things, such as 'dark as night' or 'brighter than the sun,' but you probably wouldn't use a number. But there are many other qualities in the world around us that we can also turn into measurable quantities. Units of measurement, such as inches or centimeters, can describe the distance between one point and another.
Measuring things around you, such as distance, is probably pretty familiar. How bright is the reading lamp in your living room compared with direct sunlight? Try this activity to find out! In this activity you'll use the light sensor on a phone or a tablet to examine the brightness of light from different light sources and locations. E-mail with feedback about the use of technology in this-and future-Bring Science Home activities.ĭid you know you can use a smartphone as a scientific instrument to explore the world around you? Smartphones contain many built-in electronic sensors that can measure phenomena such as sound, light, motion and more.
This is our second activity that requires the use of a smartphone or tablet.
