Nearly every modern cellphone has a built-in compass, or magnetometer, that detects the direction of Earth's magnetic field, providing critical information for navigation. Now a team of researchers at ...

In maths, a construction is an accurate drawing. Besides constructing triangles, there are two main constructions which can be done using a ruler, a pair of compasses and a pencil: After the ...

Dad: OK, so here’s the treasure map. ‘X’ marks the spot! James: Awesome! I can't wait to find out what the treasure is! Ayesha: We’ll need a compass. Dad: Do you remember how it works? Ayesha: It has ...