Category: Physics

What happens to a wave when it reaches a barrier? Diffraction: A wave encountering a small obstacle tends to bend around the obstacle. This bending of the wavefront is called diffraction. When a wave encounters a barrier with an aperture, which is much smaller than the wavelength, the wave bends and spreads out as a […]

What are the two types of mixture and substance? A mixture is made when two or more substances are combined, but they are not combined chemically. There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures. Is oil and water a heterogeneous mixture? By definition, a pure substance or a homogeneous mixture consists […]

Does the right side of the brain control? Our brains have two sides, or hemispheres. In most people, language skills are in the left side of the brain. The right side controls attention, memory, reasoning, and problem solving. What is the newest drug for bipolar disorder? 18, 2015 (HealthDay News) — A new antipsychotic drug […]

Can you manipulate more than one variable? The short answer to whether scientists can use more than one manipulated variable in their experiments is “yes.” But just as important as the answer to this question is understanding why scientists would want to include two manipulated variables. How many control variables can you have? Similar to […]

What can you not do after stem cell injections? Avoid any forceful rotation or manual manipulation. Remember that good healing during the first two months after the procedure will give you the best chance for success. The cells are fragile, and you need to be cautious that you don’t overload them or cause too much […]

What do you do if you hit black ice? Deal with a black ice encounter. If you do hit black ice, your first reaction must be to remain calm and avoid overreacting. The general rule is to do as little as possible and allow the car to pass over the ice. Do not hit the […]

Is force a base quantity? The SI is founded on seven SI base units for seven base quantities assumed to be mutually independent, as given in Table 1…. Derived quantity force Name newton Symbol N Expression in terms of other SI units – Expression in terms of SI base units m·kg·s-2 Is speed a fundamental […]

Is Diamond a luminous object? A diamond isn’t luminous object. It doesn’t have light of it’s own. Although it is a great thing to reflect the light that falls on it. That purity is what allows the diamond to show the dispersion of light and that’s the beauty. Is Earth a luminous body? It is […]

What is the principle of serial dilution? Serial dilution is a common technique used in many immunologic procedures. A small amount of serum or solute can be serially diluted by transferring aliquots to diluent. One of the most common series doubles the dilution factor with each transfer (1:2, 1:4, 1:8 …). What is the advantage […]

What stories do some of the Romanesque metalwork pieces tell? What stories do some of the Romanesque metalwork pieces tell? Religious leaders being baptized. What is the major difference between Gothic and Romanesque architecture? Gothic architecture was mainly intended to make the churches look like heaven. The Gothic architecture made the churches bright, colorful, and […]