Please provide your email address to receive an email when new articles are posted on . Patients with keratoconus and relatively regular astigmatism can benefit from toric IOLs, provided that ...

The director-general of the National Agency for Food and Drug Administration and Control (NAFDAC), Prof Mojisola Adeyeye, has ...

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or ...

The plural of formula is formulae. A formula is a mathematical rule or relationship that uses letters to represent amounts which can be changed – these are called variables. For example, the formula ...

The questions in this quiz are suitable for GCSE maths students studying formulae, substitution, creating formulae, changing the subject of a formula, rearranging formulae - higher and function ...

THERE is probably no other art that is so encumbered with formulae as photography. Every maker of sensitive material seems to consider it his duty to supply his own particular formulæ for its use, and ...