Now you Know

14872. Science Facts
To catch the leeches for medical use, volunteers stand in rivers until the leeches attach themselves to their skin.

14873. Science Facts
A treatment for the skin disease psoriasis available in Turkey involves sitting in a bath full of live fish, which eat away all the flaking skin.

14874. Science Facts
In the late 1800s, the Egyptian railways were fuelled by burning ancient mummies because they were more plentiful than coal and wood.

14875. Science Facts
The Venus flytrap is a plant with fleshy traps that look rather like a clam, edged with spikes. If an insect lands on the trap, the halves snap shut, trapping it, and then juices from the plant dissolve the insect for the plant to absorb.

14876. Science Facts
To investigate what owls eat, scientists take apart owl pellets (owl faeces) and piece together the bones and fur from different creatures the owl has eaten.

14877. Science Facts
One of the best ways of cleaning an infected wound, used before the days of antibiotics and now with infections that antibiotics can't treat, is to put maggots into it to eat the rotting flesh.

14878. Scientific Instruments & Appliances
Scientific Instruments & Appliances
altimeter
is a special type of aneroid barometer, used in measuring altitudes.

14879. Scientific Instruments & Appliances
Scientific Instruments & Appliances
ammeter
is an instrument to measure the strength of an electric current.

14880. Scientific Instruments & Appliances
Scientific Instruments & Appliances
anemometer
is an instrument to measure the velocity and find the direction of the wind.

14881. Scientific Instruments & Appliances
Scientific Instruments & Appliances
audiometer
is an instrument to measure difference in hearing.

14882. Scientific Instruments & Appliances
Scientific Instruments & Appliances
barometer
is used for measuring atmospheric pressure.

14883. Scientific Instruments & Appliances
Scientific Instruments & Appliances
binocular
is an optical instrument designed for magnified view of distant objects by both eyes simultaneously.

14884. Scientific Instruments & Appliances
Scientific Instruments & Appliances
calorimeter
is an instrument for measuring quantities of heat.

14885. Scientific Instruments & Appliances
Scientific Instruments & Appliances
chronometer
is a clock to determine longitude of a vessel of sea.

14886. Scientific Instruments & Appliances
Scientific Instruments & Appliances
clinical thermometer
is a thermometer for measuring the temperature of human body.

14887. Scientific Instruments & Appliances
Scientific Instruments & Appliances
calorimeter
is an instrument for comparing intensities of colour.

14888. Scientific Instruments & Appliances
Scientific Instruments & Appliances
commutator
is an instrument to change of reverse the direction of an electric current. in dynamo used to convert the alternating current into direct current.

14889. Scientific Instruments & Appliances
Scientific Instruments & Appliances
computer
is a technical device designed to find instantaneous solutions of huge and complex calculation based on the information already fed.

14890. Scientific Instruments & Appliances
Scientific Instruments & Appliances
dynamo
is a device for converting mechanical energy into electrical energy.

14891. Scientific Instruments & Appliances
Scientific Instruments & Appliances
electroscope
is an instrument for detecting the presence of electric charge.

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