Analysis of information sources in references of the Wikipedia article "Pháo mặt trời" in Vietnamese language version.
SUNDIAL GUN Made in 1788, this "gun" uses the heat of the sun's rays, rather than any type of lock, to fire. The purpose of these so-called sundial guns is to announce the arrival of noon. The purpose of these so-called sundial guns is to announce the arrival of noon.
A dry wadding is rammed home in the muzzle of the gun and when the dial is mounted upon the parallel for which it is cut, the gun would discharge at twelve o'clock noon fired by the concentrated rays of the sun as it crossed the line.
As the sun works around to noon, the solar rays are focused on the fuse, and with the blast, liberated woman knows that dinner is served.
As the sun works around to noon, the solar rays are focused on the fuse, and with the blast, liberated woman knows that dinner is served.
