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Amwoga Khalwale A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. There are different types of circuit breakers made in varying sizes, from small devices that … Read more
What Is Lone Pair? When two elements of a pair are joined together with the surface contact between them, the joint is referred to as lower pair. Area of two elements comes together when relative motion occurs between the elements to form a lower pair e.g nut and screw, universal joint used to connect two … Read more
Volt and ampere are two measures of electrical current or flow of electrons. They define characteristics of an electricity supply. Voltage is a measure of the pressure that allows electrons to flow while ampere is a measure of the volume of electrons. These measurements of supply allow us to calculate the power a supply can … Read more
Hardy Hibiscus Hardy, perennial or winter hardy hibiscus belongs to the family of Rose Mallow or Hibiscus moscheutos, Hibiscus mutabilis or Hibiscus coccineus. All varieties of hardy hibiscus are native to areas with cold and harsh winters. This hibiscus variety requires a well-drain soils and full sun. They grow up to 8 feet tall and … Read more
Light Waves Light travels as waves. Light waves don’t always require particles to travel through. They can also travel through outer space or a vacuum. Light waves travel in straight lines. You can detect them with your eyes and also with instruments such as camera. They are reflected by mirrors and change direction when they … Read more
What Is An Atom? An atom is the smallest unit of matter that retains all of the chemical properties of an element. Every solid, liquid, gas and plasma is composed of neutral or ionized atoms. An atom is composed of two regions the nucleus which is in the center of the atom and contains protons … Read more
Frogs Frogs are a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura. Frogs are widely distributed ranging from the tropics to subarctic regions, but the greatest population is found in tropical rainforests. They are also one of the five diverse vertebrate orders. Frogs have a stout body, protruding eyes, cleft … Read more
Markovnikov Rule In organic chemistry, Markovnikov ‘s rule also referred to as Markownikoff’s rule describes the outcome of some addition reactions. The rule was formulated by Russian chemist Vladimir Markovnikov in 1870. The rule states that, with the addition of a Protic acid HX (X=Cl, Br, I) to an asymmetric alkene, the acid hydrogen (H) … Read more
DNA Polymerase I (Pol I) DNA polymerase I (or Pol I) is an enzyme that participates in the process of prokaryotic DNA replication. Discovered by Arthur Kornberg in 1956, it was the first known DNA polymerase (and the first known of any kind of polymerase). It was initially characterized in E. coli and is ubiquitous in prokaryotes. In E. coli and many other bacteria, the gene that encodes Pol I is known … Read more
What Are Nitrates? A nitrate is any member of either of two classes of compounds derived from nitric acid, HNO3– and a positive ion such as NH4+. Nitrates are common components of fertilizers and explosives. Examples of nitrates include: Potassium nitrate KNO3) Sodium nitrate (NaNO3) Ammonium nitrate ( NH4NO3) etc. What You Need To Know … Read more