Click photo/video of atleast 5 devices for doing domestic uses like as for the purpose of grinding, husking, making yarn, cooking etc, which are being used since past and are our traditional devices. Write a few points for each device and also write the name of present scientific devices which substituted the traditional one. Also mention the source of energy for both traditional and scientific device.
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A wide variety of machines are used for grinding: Hand-cranked knife-sharpening stones (grindstones) Handheld power tools such as angle grinders and die grinders. Various kinds of expensive industrial machine tools called grinding machines.
A grinding machine, often shortened to grinder, is one of power tools or machine tools used for grinding, it is a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on the wheel's surface cuts a small chip from the workpiece via shear deformation.
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