24/04/2021
What is Blue Water-Gas?
A gas consisting mainly of carbon monoxide and hydrogen, made by passing steam over red-hot coke and burning with a blue flame, used especially as a source of hydrogen; also called Blue gas, Water gas. The manufacture of water gas first became an industrial proposition in 1873 with the introduction of the intermittent system by Strong and by Lowe in the United States. Strong, who aimed at manufacturing blue water gas mainly for heating purposes., utilised the heat value of the “blow” gases to superheat the steam admitted to the generator. Lowe, on the other hand, aimed at producing a gas of high illuminating value, and utilised the large quantities of combustible gas produced during the “blow” periods for heating chambers in which enriching oil was decomposed. No real progress in the manufacture of water gas in Great Britain was made until 1888,. when a plant was installed at the Leeds Forge. Since that time the utilisation of water gas has advanced rapidly, and the manufacture of water gas, both blue and carburetted, is now an important auxiliary in the production of gas for town supply.
What is Lagrange Point?
Lagrange Points are positions in space where the gravitational forces of a two body system like the Sun and the Earth produce enhanced regions of attraction and repulsion. These can be used by spacecraft to reduce fuel consumption needed to remain in position.
Lagrange points are named in honor of Italian-French mathematician Josephy-Louis Lagrange.
There are five special points where a small mass can orbit in a constant pattern with two larger masses. The Lagrange Points are positions where the gravitational pull of two large masses precisely equals the centripetal force required for a small object to move with them. This mathematical problem, known as the "General Three-Body Problem" was considered by Lagrange in his prize winning paper (Essai sur le Problème des Trois Corps, 1772).
Of the five Lagrange points, three are unstable and two are stable. The unstable Lagrange points - labeled L1, L2 and L3 - lie along the line connecting the two large masses. The stable Lagrange points - labeled L4 and L5 - form the apex of two equilateral triangles that have the large masses at their vertices. L4 leads the orbit of earth and L5 follows.
How do pimples form?
Our Skin is covered in millions of tiny little pores, that sit at your hair follicles. Pores connect the surface of your skin to an underlying gland called the Sebaceous gland. This gland produces an oily substance called sebum which is released continually, in small amounts, into the hair follicles and skin. Dead skin cells are also carried up with the sebum so they can be washed away.
Occasionally, the sebaceous gland produces too much sebum. The overflow of oil can clog the pore. Excess oil and dead skin cells form a plug in the gland. This pore becomes clogged with sebum, oil, and possibly bacteria. These bacteria multiplies and can lead to an infection, swelling, and inflammation around the clogged pore. A white tip of pus will sometimes form at the top of the clogged pore. This creates a pimple.
Pimples are most likely to occur during the teenage years and around menstruation(for women) because during these times hormone production changes and the sebaceous glands become overactive.
