Highfield lever Highfield lever A Highfield lever is a lever device which allows tension to be rapidly set up in a wire and equally rapidly released to the required extent. It is frequently used in sailing boats where tension in some part of the rigging needs to be adjusted to a pre-set amount as the wind impinges on one side of the sails or the other. It is typically used in running backstays (runners). To make it work, the backstay is led through a block or fairlead along the deck to a two-legged, second order lever mounted with its fulcrum above deck
Mark A. Lever faculty of ETH Zurich. Lever is a member of the Deep Life Scientific Steering Committee and Synthesis Group 2019 for the Deep Carbon Observatory and is an associate editor for "Frontiers in Microbiology". In his research, Dr. Lever investigates factors that determine the presence, abundance, community composition, and metabolism of microorganisms in aquatic sediments and in Earth's crust. In 2013 he discovered that microbes survive deep in the crust by living off of chemical energy in the “dark biosphere.” His work has a special focus on the burial, remineralization, and synthesis of organic matter in aquatic sediments and in Earth’s