Category: Physics

Did Elizabeth 1 go to war? Queen Elizabeth I reigned for 44 years and 127 days. In her reign she faced three main wars. They were: The Desmond Rebellion, the English War against Spain and the Tyrone Rebellion. The English war against Spain lasted from 1585 – 1603 (18 years). What does Elizabeth mean when […]

What is the span of the range? Span – It can be defined as the range of an instrument from the minimum to maximum scale value. In the case of a thermometer, its scale goes from −40°C to 100°C. Thus its span is 140°C. Range – It can be defined as the measure of the […]

Who invent who invented? Inventions & Inventors in Physics Invention Inventor Telephone Alexander Graham Bell Electricity Benjamin Franklin Electric Light Bulb Thomas Edison Thermometer Galileo Galilei Who is the most famous inventor? TOP 10 inventors of all time Thomas Edison. Archimedes. Benjamin Franklin. Louis Pasteur and Alexander Fleming. the Montgolfier brothers and Clément Ader. Nikola […]

Why is most of you just 10 years old or less? Whatever your age, your body is many years younger. In fact, even if you’re middle aged, most of you may be just 10 years old or less. This heartening truth, which arises from the fact that most of the body’s tissues are under constant […]

Should you put plastic behind insulation? Without a vapor barrier in place, condensation inside the walls could ruin the insulation and promote the growth of harmful mold and bacteria. Plastic, specifically 6-mil polyethylene plastic, is the most commonly used vapor barrier. Should you put plastic over insulation before drywall? Without poly beneath the drywall, water […]

Is the atomic number the number of electrons? The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also equal to the number of electrons. The sum of the atomic number Z and the number of neutrons N gives […]

What is balancing a centrifuge and why is it important? Why Balancing Your Laboratory Centrifuge Matters Out of balance loading causes the moving parts to shake uncontrollably. At best, this means the motor and bearings wear out more quickly. At worst, it risks sudden and explosive failure of the motor or rotor, and serious injury […]

What is it called when glaciers move? A glacier might look like a solid block of ice, but it is actually moving very slowly. The glacier moves because pressure from the weight of the overlying ice causes it to deform and flow. Occasionally a glacier speeds up. This is called surging. What is the longest […]

What is the difference between slip rings and split rings? What is the difference between a split-ring and a slip-ring commutator? A split-ring makes the current change direction every half-rotation, whereas a slip-ring commutator merely maintains a connection between the moving rotor and the stationary stator. Which device uses slip rings? Slip rings are used […]

What is the reading on the vernier calipers? The main scale reading is the first reading on the main scale immediately to the left of the zero of the vernier scale (3 mm), while the vernier scale reading is the mark on the vernier scale which exactly coincides with a mark on the main scale […]