Forget hunting for a tape measure or a protractor. Use your Android phone camera and sensors to handle different types of measurements easily.

There are different ways to investigate refraction in rectangular blocks. In this required practical activity, it is important to: make, measure and record the angles of incidence accurately using a ...

“The Kivin method is an exciting way of performing oral sex,” says sex and relationship expert Annabelle Knight, author of ...

Division of Preventive Medicine, Department of Epidemiology, Brigham & Women's Hospital, Harvard Medical School, Harvard School of Public Health, Boston, Massachusetts USA Correspondence to Dr I-Min ...

The metric system is used to measure the length, mass or capacity of an object. Length is measured in millimetres (mm), centimetres (cm), metres (m) or kilometres (km). Mass or weight is measured in ...

China's decision to tighten controls on the export of specific dual-use items to the United States arose from the need to safeguard its own security and development interests, as well as fulfill its ...