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2. Sawhorse - Wikipedia

   en.wikipedia.org/wiki/Sawhorse

   A folding sawhorse. Lightweight, stack-able, saw horses from the book Agricultural Woodworking: a group of problems for rural and graded schools ... by Louis Michael Roehl. 1916. In woodworking, a saw-horse or sawhorse (saw-buck, trestle, buck) [1] is a trestle structure used to support a board or plank for sawing.

3. Group (periodic table) - Wikipedia

   en.wikipedia.org/wiki/Group_(periodic_table)

   In the periodic table of the elements, each column is a group. In chemistry, a group (also known as a family) [1] is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the 14 f-block columns, between groups 2 and 3, are not numbered.

4. 2020 Summer Olympics medal table - Wikipedia

   en.wikipedia.org/wiki/2020_Summer_Olympics_medal...

   The table uses the Olympic medal table sorting method. By default, the table is ordered by the number of gold medals the athletes from a nation have won, where a nation is an entity represented by a National Olympic Committee (NOC). The number of silver medals is taken into consideration next, and then the number of bronze medals.

5. Folding carton - Wikipedia

   en.wikipedia.org/wiki/Folding_carton

   The folding carton created the packaging industry as it is known today, beginning in the late 19th century. [ 1 ] [ 2 ] [ 3 ] The process involves folding carton made of paperboard that is printed, laminated , cut, then folded and glued.

6. Protein folding - Wikipedia

   en.wikipedia.org/wiki/Protein_folding

   Protein folding must be thermodynamically favorable within a cell in order for it to be a spontaneous reaction. Since it is known that protein folding is a spontaneous reaction, then it must assume a negative Gibbs free energy value. Gibbs free energy in protein folding is directly related to enthalpy and entropy. [12]

7. Ladder - Wikipedia

   en.wikipedia.org/wiki/Ladder

   An extension ladder. A ladder is a vertical or inclined set of rungs or steps commonly used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top.