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Ferrofluidic is the brand name of a staged magnetic liquid rotary sealing mechanism made by the Ferrotec Corporation. Ferrofluidic seals, also known as magnetic liquid rotary seals, are employed in various rotating equipment to facilitate rotary motion while ensuring a hermetic seal.
That is, a ferrofluid contains primarily nanoparticles, while an MR fluid contains primarily micrometre-scale particles. The particles in a ferrofluid are suspended by Brownian motion and generally will not settle under normal conditions, while particles in an MR fluid are too heavy to be suspended by Brownian motion. Particles in an MR fluid ...
Ferrofluid deformable mirror. A ferrofluid mirror is controlled by a number of actuators, often arranged in a hexagonal array. [3] [4] Pure ferrofluids have low reflectivity, so they must be coated with a reflective layer. Water-based ferrofluids hold the reflective layer effectively, but water evaporates so quickly that the mirror could ...
One of 12 roundels depicting the "Labours of the Months" (1450-1475) A sickle, bagging hook, reaping-hook or grasshook is a single-handed agricultural tool designed with variously curved blades and typically used for harvesting or reaping grain crops, or cutting succulent forage chiefly for feeding livestock.
Fog collection, also known as fog harvesting, is the harvesting of water from fog using large pieces of vertical mesh netting to induce the fog-droplets to flow down towards a trough below. The setup is known as a fog fence , fog collector or fog net .
Logging frequently has negative impacts. The harvesting procedure itself may be illegal, including the use of corrupt means to gain access to forests; extraction without permission or from a protected area; the cutting of protected species; or the extraction of timber in excess of agreed limits. [4] It may involve the so-called "timber mafia".
A Scoubidou is a corkscrew-like tool that is used for the commercial harvesting of seaweed, whose invention is credited to Yves Colin in 1961. [1] The device consists of an iron hook attached to a hydraulic arm. [2] It superseded a common harvesting tool known as the guillotine shortly after its invention. [3]
A jimador using a coa de jima. A coa de jima or coa ("hoe for harvesting", "hoe") is a specialized tool for harvesting agaves.. It is a long, machete-like round-ended knife on a long wooden handle used by a jimador to cut the leaves off an agave being harvested and to cut the agave from its roots.