Many people believe that DNA was discovered in 1950 by Watson and Crick‚ but they are misguided‚ in fact it was discovered almost centuries before by a number of less known scientists. Genes were discovered to be heritable from parents by a humble pea grower by the name of Gregor Mendel in 1866. Since then we have discovered that DNA‚ also known as deoxyribonucleic acid‚ is the carrier of genes‚ traits that pass down from generation to generation.The reality is that the credit didn’t go to everyone
Premium DNA Francis Crick
Nature of Waves Vibrations or oscillations are closely related to waves. Waves are created whenever objects vibrate or oscillation. Periodic Motion * A repeated motion that occurs back and forth over the same path at regular intervals. Examples: * A Child on a swing * A wrecking ball swaying to and fro * A swinging pendulum of a grandfather clock Simple Harmonic Motion (SHM) * Is a type of motion along a straight path in which the acceleration is proportional to the displacement
Premium Wave Wavelength Phase
Structural Analysis of Serine Peptidase-Inhibitor Complexes When analyzing these structures‚ we observed a reasonably strong hydrogen bond interaction (distance ~ NVL ≫ AAoF ≈ NVoL. Surprisingly‚ the unmodified AAF compound showed a substantially higher level of activity over the unmodified NVL compound. Initially‚ we hypothesized that the modified compounds (No H-Bond) would be less active. To our surprise‚ both modified compounds‚ AAoF and NVoL‚ showed negligible activity (Figure 16). Additionally
Premium Protein Oxygen Amino acid
1440: Nicolas Cusanus‚ Earth is in motion 1440: Nicolas Cusanus‚ infinite universe 1450: Johann Gutenberg‚ first printing press in Europe 1472: Johannes Regiomontanus‚ observation of Halley’s comet 1480: Leonardo de Vinci‚ description of parachute 1480: Leonardo de Vinci‚ compares reflection of light to reflection of sound waves 1490: Leonardo de Vinci‚ capillary action 1492: Leonardo de Vinci‚ foresees flying machines 1494: Leonardo de Vinci‚ foresees pendulum clock 1514: Nicolaus Copernicus
Premium Quantum mechanics Electron General relativity
Gravitation Gravitational field strength at a point is defined as the gravitational force per unit mass at that point. Newton’s law of gravitation: The (mutual) gravitational force F between two point masses M and m separated by a distance r is given by F = | GMm | (where G: Universal gravitational constant) | | r2 | | or‚ the gravitational force of between two point masses is proportional to the product of their masses & inversely proportional to the square of their separation. Gravitational
Premium Force Potential energy Energy
Introduction CL-20 is a energetic compound with high density‚ good oxygen balance (-11%) and high explosive power. However‚ CL-20 has failed to see widespread implementation due to high mechanical sensitivity‚ it is relatively easily detonated by physical forces in comparison to other secondary explosives. While cocrystal CL-20/TNT exhibited a mechanical impact sensitivity greatly reduced relative to that of pure CL-20‚ it was also expected to feature reduced explosive power due to the
Premium Nuclear fission Nuclear power Uranium
species. Their activity has also been tested by broth dilution method using six bacterial species. Minimum Inhibitory Concentration (bactericidal) is 6.25–25.00 mg mL–1. Keywords: diethyldithiocarbamate‚ DTA‚ fungicide‚ IR‚ synthesis‚ TG‚ X-ray diffraction Introduction The plant protection has become necessary in order to increase the food production. Many organometallic compounds may have important biological activities. This work is continuation of our previous research on organometallic compounds
Premium Solubility Solvent Solution
absorbed and have been stripped of any white light wavelengths. Any color that is primarily absorbed by a pigment molecule will have the reflection of light in the opposite range of color. Structural colors are created from reflection‚ diffraction and refraction. At times‚ light can reflect away from an object creating many fragments‚ so it is said to be scattering. However‚ if the light changes speed while/before hitting a transparent object‚ it is
Premium Light Electromagnetic radiation Color
diode-pumped Nd3+ cladding-pumped Raman fiber lasers 6.8 W diode-pumped Yb3+ cladding-pumped Raman fiber lasers January 8‚ 2008 Y. Lin: Raman Amplifier 8 Raman Fiber Laser High-order Raman scattering Partially reflecting (20%) fiber grating Eight out of ten photons are converted to the output Capable of generating high power light at any wavelength from 1.2 to 1.7 microns January 8‚ 2008 Y. Lin: Raman Amplifier 9 Raman Fiber Laser How Does Cascaded Raman Laser Work Raman
Premium Laser
first stanza opens with the description of a nightly scene at the seaside. The speaker calls to his beloved to come to the window‚ to share the visual beauty of the scene. The speaker projects his own feelings of melancholy on to the sound of “the grating roar/Of pebbles‚ which the waves draw back‚ and fling/At their return‚ up the high strand” (9-11). This sound causes an emotion of “sadness” in him. The second stanza introduces the Greek author Sophocles’ idea of “the turbid ebb and flow/Of human
Free Stanza Poetry Rhyme