What is the contribution of Johann Heinrich Pestalozzi to education? In the history of education, the significant contributions of Johann Heinrich Pestalozzi are (1) his educational philosophy and instructional method that encouraged harmonious intellectual, moral, and physical development; (2) his methodology of empirical sensory learning, especially through object lessons; and (3) his … What is […]
What is the radius ratio rule?
What is the radius ratio rule? The ratio of radius of cation to anion is called radius ratio. In condensed matter physics and inorganic chemistry the cation-anion radius ratio (also: radius ratio rule) is the ratio of the ionic radius of the cation to the ionic radius of the anion in a cation-anion compound. What […]
Does a VIN number start with a number or letter?
How much energy is released in nuclear fission of u235?
What is it called when Colours are next to each other on the Colour wheel?
What is it called when Colours are next to each other on the Colour wheel? An analogous color scheme is made up of colors next to each other on the wheel. For example, red, orange, and yellow are analogous colors. What are three colors next to each other on the color wheel? Analogous colours are […]
How does spatial disorientation affect a pilot?
How does spatial disorientation affect a pilot? Spatial disorientation can also affect instrument-rated pilots in certain conditions. A powerful tumbling sensation (vertigo) can result if the pilot moves his or her head too much during instrument flight. This is called the Coriolis illusion. What causes spatial disorientation? Spatial disorientation is more likely to occur when […]
Why does aluminum not have an endurance limit?
Why does aluminum not have an endurance limit? Aluminum does not have an endurance limit such as ferrous metals. Aluminum will fail if it goes though enough stress cycles. If the stress on the steel is above the endurance limit, the metal will fail and how quickly it fails depends on the magnitude of the […]
How do you saturate a TLC chamber?
How do you saturate a TLC chamber? Chamber saturation method Fill the chamber with solvent to a height of 0.5 to 1 cm. Carefully tilt the chamber to moisten the filter paper and equilibrate the chamber with solvent vapors. After a few minutes, the chamber is saturated with vapors. Why do we saturate TLC chamber? […]
What is the relation between current and intensity?
What is the relation between current and intensity? This current is the number of electrons being emitted per second. That is directly proportional to the intensity of the light. So greater intensity means more photons striking the surface and hence an increase in the emitted electrons. The frequency of the light tells is about the […]