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Microscope: used for visualising minute structures, including microbes: Bunsen burner or spirit lamps or candles: source of fire / heat Ultracentrifuge: used to separate particles dispersed in a liquid according to their molecular mass: Electrophoresis apparatus
A traveling microscope. E—eyepiece, O—objective, K—knob for focusing, V—vernier, R—rails, S—screw for fine position adjustment. A travelling microscope is an instrument for measuring length with a resolution typically in the order of 0.01mm.
Firelighting (also called firestarting, fire making, or fire craft) is the process of starting a fire artificially. Fire was an essential tool in early human cultural development. The ignition of any fire, whether natural or artificial, requires completing the fire triangle, usually by initiating the combustion of a suitably flammable material.
A fire drill, sometimes called fire-stick, is a device to start a fire by friction between a rapidly rotating wooden rod (the spindle or shaft) and a cavity on a stationary wood piece (the hearth or fireboard). [1] [2] [3]
The vibrating microtome operates by cutting using a vibrating blade, allowing the resultant cut to be made with less pressure than would be required for a stationary blade. The vibrating microtome is usually used for difficult biological samples. [18] The cut thickness is usually around 30–500 μm for live tissue and 10–500 μm for fixed ...
A feather stick (sometimes referred to as a fuzz stick) is a length of wood which has been shaved to produce a cluster of thin curls protruding from the wood. It allows damp wood to be used to start a fire when dry tinder is hard to find. [1] It is believed to be a traditional method of fire starting, using basic tools and methods. [1]
Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...
Four magnetic stir bars next to a metre stick. A magnetic stirrer consists of a magnetic bar placed within the liquid which provides the stirring action. The stir bar's motion is driven by another rotating magnet or assembly of electromagnets in the stirrer device, beneath the vessel containing the liquid. [4]