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2. Sandpaper - Wikipedia

   en.wikipedia.org/wiki/Sandpaper

   Sandpaper comes in a number of different shapes and sizes: Sheet: usually 9 by 11 inches (23 by 28 cm), but other sizes may be available; Belt: usually cloth backed, comes in different sizes to fit different belt sanders. Disk: made to fit different models of disc and random orbit sanders. May be perforated for some models of sanders.

3. Plywood - Wikipedia

   en.wikipedia.org/wiki/Plywood

   The sizes of the most commonly used plywood sheets are 4 by 8 feet (1,220 mm × 2,440 mm) [20] which was first used by the Portland Manufacturing Company, who developed modern veneer core plywood for the 1905 Portland World Fair. A common metric size for a sheet of plywood is 1200 × 2400 mm. 5 × 5 feet (1,500 × 1,500 mm) is also a common ...

4. Wood drying - Wikipedia

   en.wikipedia.org/wiki/Wood_drying

   For example, a typical size of a green board used for this research was 6 m long, 250 mm in width and 43 mm in thickness. If the boards are quartersawn, then the width will be in the radial direction whereas the thickness will be in tangential direction, and vice versa for plain-sawn boards.

5. Dimensional analysis - Wikipedia

   en.wikipedia.org/wiki/Dimensional_analysis

   In engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities (such as length, mass, time, and electric current) and units of measurement (such as metres and grams) and tracking these dimensions as calculations or comparisons are performed.

6. Bending of plates - Wikipedia

   en.wikipedia.org/wiki/Bending_of_plates

   In the Kirchhoff–Love plate theory for plates the governing equations are [1], = and , = In expanded form, + = ; + = and + + = where () is an applied transverse load per unit area, the thickness of the plate is =, the stresses are , and

7. Phone connector (audio) - Wikipedia

   en.wikipedia.org/wiki/Phone_connector_(audio)

   The 2.5 mm or sub-miniature sizes were similarly popularized on small portable electronics. They often appeared next to a 3.5 mm microphone jack for a remote control on-off switch on early portable tape recorders; the microphone provided with such machines had the on-off switch and used a two-pronged connector with both the 3.5 and 2.5 mm plugs.