Physics and Other Sciences 2024 PDF

Physics and Other Sciences Aaron G.K. July 11, 2024 Brainstorming.. What is science? Answers to brainstorm questions Science is a collection of different scientific fields, or disciplines. It is the union of these fields that helps us...

Physics and Other Sciences Aaron G.K. July 11, 2024 Brainstorming.. What is science? Answers to brainstorm questions Science is a collection of different scientific fields, or disciplines. It is the union of these fields that helps us to understand the world in which we live. Brainstorming.. Can you list other sciences or specializations in which the word physics appears in their names? Answers to brainstorm questions Astrophysics, mathematical physics, geophysics medical physics, physical chemistry, chemical physics, environmental physics, molecular physics, biophysics, and many, many more. Brainstorming.. How is the knowledge of physics used or applied in these sciences or specializations? Introduction ► Physics is a fundamental science influencing many scientific fields. ► Understanding the interplay between physics and other sciences is crucial for scientific advancement. ► Scientific disciplines are inter-dependent on each other and reinforce one another. Scientific disciplines do not have fixed borders Physics and Chemistry ► What are the relationships between physics and chemistry? ► What physics concept is applied in identifying atoms? Physics and Chemistry ► Both chemistry and physics study matter. They have no clear border in specializations such as physical chemistry, chemical physics, nuclear physics/chemistry, materials science, spectroscopy, atomic physics and others ► Spectroscopy is used in identifying atoms. Here are some of the advanced instruments uses in spectroscopy: ultraviolet spectrometer, Infrared spectrometer, nuclear resonance magnetic spectrometer, X-ray diffraction, scanning electron microscope, energy dispersive X-ray.. Physics and Chemistry ► Overlap when the topic being studied is composed of electrons and nuclei. ► Both physics and chemistry are concerned with matter and its interaction with energy ► Physics principles explain atomic and molecular structures, bonding processes, and reactions. ► Spectroscopy: key tool developed through collaboration of physicists and chemists. Cont.. ► Most of what’s know about matter and atoms comes from spectroscopy - by studying how matter interacts with radiation. Summary Both physics and chemistry deals about matter and energy. However, physics looks at this question on a much smaller scale. ► Physics concerns the movement of physical objects in time, while chemistry concerns the transformation of physical matter from one type to another. ► Chemists and physics share such knowledge of physics as: o Thermodynamics o Atomic physics o Nuclear physics o Matter and energy o Chemical bonding meme? xD Physics... and biology? What are the physics concepts apparent in our bodies? Physics and Biology ► Mechanics of human motion, energetics of metabolism, fluid dynamics of blood flow. ► Optical imaging system (the eye), mechanisms for speaking and hearing. ► the mechanics of muscles and body movements ► flow of body fluids, blood and air ► hearing and audio properties of the ears ► vision optics ► heat and energy ► message transmission The physics of standing...? Why it is difficult to stand on one foot than the two feet? Why we are more stable when we sleep than we are standing? Why is it almost a reflex to sleep or lay down during a physically unstable condition? Newtonian Mechanics and Biology ► Explains movement of animals and their body parts. ► Center of mass, equilibrium, and stability in human motion. The Science of a Cheetah’s Speed - https://www.youtube.com/watch?v=icFMTB0Pi0 g Fluid Flow and Biology ► Have you observed when the earthworm moves? How do earthworms locomote without limbs? ► How does blood move against gravity from the feet to the heart or from the heart to the brain when a person stands erect? Fluid Flow and Biology Soft-bodied animals such as the earthworm that lack limbs utilize Pascal‘s principle to produce body motion. The structure by means of which this is done is called the hydrostatic skeleton. Contraction of the longitudinal muscles causes the animal to become shorter and fatter. If the longitudinal muscles contract only on one side, the animal bends toward the contracting side. By anchoring alternate ends of its body to a surface and by producing sequential longitudinal and circular contractions, the animal moves itself forward or backward. Longitudinal contraction on one side changes the direction of motion. Fluid Flow and Biology The circulation of blood through the body is often compared to a drains system with the heart as the pump and the veins, arteries, and capillaries as the pipes through which the blood flows. The blood is pumped through the circulatory system by the heart, and it leaves the heart through vessels called arteries and returns to it through veins. Fluid Flow and Biology Sound Waves and Biology ► Production of sound by vocal cords. ► Propagation of sound waves and their reception by the ear. ► Elephants using unique sounds? https://youtu.be/nII9yngRuac  Electricity and Biology ► Electrical phenomena in nervous system and muscle movement. ► Transmission of electrical pulses by neurons. ► The nervous system of animals and the control of muscle movement is controlled by electrical interactions. ► The message in our body is transmitted as electric pulse by the neurons ► Our electrical condition measured externally can give our health condition (eeg, ekg) EEGs & EKGs Electrocardiograms Electroencephalograms Electricity beyond humans.. Sharks use electric signals to locate their prey and to communicate with other sharks. Electric eels can generate electric pulses up to 500 V along their skins How much current would do damage to the human body?  Any amount of current over 10 milli- amperes is capable of producing painful to severe shock, currents between 100 and 200 milliamperes (0.1 to 0.2 amp) are lethal. Opinions on capital punishment? Optics Intro: If your skin would literally glow, which color would you choose? (bonus question - what’s the scottish skirt called?) ► Bioluminescence in marine animals - to warn predators, to lure prey, and for communication between members of the same species  Optical Physics and Biology ► Role of light in photosynthesis and vision. ► Applications in microscopes, telescopes, spectroscopy, and lasers. ► Optical physics supports biology by providing optical instruments, like microscopes, which are important to study biological properties.