Safe Patient Handling Toolkit - 2011 Edition11 â¢ Put the bed at the correct height (waist level when pro-viding care; hip level when moving a patient .) â¢ Try to keep the work directly in front of you to avoid rotating your spine . â¢ Keep the patient as close to you as possible to minimize reaching or overstretching .
Chemical elements listed by the discovery year. For chemistry students and teachers: The tabular chart on the right is arranged by the discovery year. The oldest chemical element is Phosphorus and the newest element is Hassium. Please note that the elements do not show their natural relation towards each other as in the Periodic system.
This age has been determined with the radioactive dating technique. The precise decay rate of radioactive elements is used as a clock: the number of daughter products in one rock indicates its age. The oldest meteorites ever dated in the Solar System are 4,56 billion years old, the oldest minerals on Earth are 4,4 billion years old, and the oldest rocks on Earth are 4 billion years old.