This technology is even simpler to explain. RF is a kind of electric current that travels back and forth in different directions. It can be applied in such a way that it travels through your entire body from one side and out the other or between a 10mm gap using a small hand piece, just along the surface of your skin.
Lesson Summary. A post and lintel is an architectural system where a horizontal piece is supported by two vertical posts, or columns. This is a basic form of architecture that has been used since ancient times, but the Egyptians used it for monumental architecture, or buildings that are massive in size and scale.
1 The lintel must bear loads that rest on it as well as its own load without deforming or breaking. Brick or stone, weak in tensile strength (inelastic and brittle), can provide only a short lintel; steel can be used for long lintels. 2  The posts must support the lintel and its loads without crushing or buckling.