Stomatal density (SD) can vary within leaves, plants, and individuals of a single species (Al Afas et al. 2006). It can also vary due to environmental factors such as light, air humidity, water availability and atmospheric CO2 concentration (Woodward and Kelly 1995). What causes higher stomatal density? Thus, one mightRead More →
One of the basic terms used in many natural sciences is density, a physical property defined as an object’s mass divided by its volume. This means that to measure density, you typically need to measure an object’s mass and volume separately, then calculate its density by dividing the mass byRead More →
So, the density of ocean water increases and increases as you go to the bottom of the ocean. The deep ocean is layered with the densest water on bottom and the lightest water on top. Circulation in the depths of the ocean is horizontal. That is, water moves along theRead More →
Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy. Are gasses low density?Read More →
How does gravity affect density? The gravity of the body will work to increase its density. If we think of gravity as a force then to achieve equilibrium something needs to counteract the force of gravity, usually electromagnetic repulsion caused by neighboring electron shells. Does gravity affect mass? Mass– theRead More →
Viscosity = (2 x (ball density – liquid density) x g x a^2) ÷ (9 x v), where g = acceleration due to gravity = 9.8 m/s^2, a = radius of ball bearing, and v = velocity of ball bearing through liquid. Plug your measurements into the equation to calculateRead More →
Standard treatments, drugs called bisphosphonates, stop the loss of bone but do not build it. The alternatives, parathyroid hormone and a derivative, build bone but also break it down, limiting the therapeutic effect. What do bisphosphonates do to bone? Bisphosphonates are a group of drugs that work by slowing boneRead More →
J is the conducting current density. JD is the displacement current density. Here, ρ is the electric charge density. Thus, JD=∂D∂t displacement current density is necessary to balance RHS with LHS of the equation. What is significance of displacement current density? This term is known as the Displacement Current Density.Read More →
Fig. 1.3. Density gradient centrifugation, in its original and simplest form, is a mixture of particles layered over a medium whose density increases from top to bottom (A). In a short or slow centrifugation large particles sediment more rapidly than small particles (B). What is use of density gradient centrifugation?Read More →
Simplest ratio Empirical formula mass = 12 1 + 1 1+ 16 1 = 29. Molecular mass = 2 vapour density. = 2 58. = 116. Molecular formula mass = n Empirical formula mass. Molecular formula = n Empirical formula. = 4 (CHO) What is the relationship between density andRead More →