What did Joseph Lister use as an antiseptic?

What did Joseph Lister use as an antiseptic? He developed antiseptic surgery by spraying medical instruments, catgut and bandages with a 1-in-20 solution of carbolic acid. As always there was some opposition. Many surgeons claimed that Lister’s antiseptic methods slowed things, at a time when speed was still essential because of blood loss. What did […]

How are furnaces insulated?

How are furnaces insulated? Most vacuum furnaces currently active in the heat-treating world incorporate some form of, or combination of, graphite-felt insulation, with either a foil or board internal facing in the furnace hot-zone construction. The graphite felt used in high-temperature furnaces is either PAN-based or Rayon-based. Do electric furnaces need to be vented? Electric […]

What type of instrument is harpsichord?

What type of instrument is harpsichord? keyboard instrument Was harpsichord used in the classical era? The harpsichord was the number-one keyboard instrument for music of the Baroque and early Classical periods, and you still often hear it played in music from those periods. A lot of the music of such great composers as Bach, Handel, […]

Why should we ban dangerous sport?

Why should we ban dangerous sport? Dangerous sports are known for being the source of many lost lives. Dangerous sports should be banned because serious injuries could occur and in some dangerous sports, viewers could also be in danger. Why are extreme sports bad? There are risks associated with any sport. However, extreme sports have […]

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