Planck's constant: the constant relating the change in energy for a system to the frequency of the electromagnatic radiation absorbed or emitted, equal to 6.626 X 10^-34 J 5. Quantization: the concept that energy can occur only in discrete units called quanta 6. Photon: a quantum of electromagnetic radiation 7. Photoelectric effect: ejection of electrons from a substance by incident electromagnetic radiation, especially by visible light 8. E=mc^2: Einstein's equation proposing that energy has mass; E is energy, m is mass, and c is the speed of light 9.
Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle. 6. A pulsar does not pulse, it emits beams of radiation that sweep around the sky as the neutron star rotates, and astronomers detect pulses when they sweep over the Earth. 11. Sometimes in binary systems, mass flows into a hot accretion disk around the neutron star and causes the emission of x rays.
Electromagnetic Radiation: Radiation consisting of oscillating electric and magnetic fields, namely gamma rays, X-rays, visible light, ultraviolet and infrared radiation and radio waves. Interstellar Medium: Interstellar gas and dust. Julian date: A Julian date or day number is the number of elapsed days since the beginning of a cycle of 7,980 years invented by Joseph Scaliger in 1583. Magnetic Field: A region of space near a magnetized body within which magnetic forces can be detected. Neutron Star: A very compact, dense stellar remnant composed almost entirely of neutrons.
EMR has electric and magnetic fields that surround devices such as cell phones, laptops, and various other electronic equipment (www.cancer.org). Electromagnetic radiation is classified according to the frequency of its wave which varies from non- ionizing (radio waves and microwaves,) to ionizing (X-rays and gamma rays). Radiofrequency energy is a form of electromagnetic radiation. Electromagnetic radiation carries energy - sometimes called radiant energy - and momentum that may be imparted to matter with which it interacts, through absorption of electromagnetic radiation (http://www.colorado.edu/physics). Cell phones use low frequency radio waves; however scientists are investigating if these ionizing waves could potentially, over time, cause cancer.
Suppose that you have a structure on a planet or a spaceship in the middle of nowhere, and suppose you don't want the force field on all the time either because there are times when protection isn't needed. The outer layer of your force field is hot plasma (hot gas of ion). Where are these ions when the force field is off and how long does it take to turn it back on? The middle layer is the group of laser beams. When the force field is off, do the laser beams stay outside the nanotube layer?
Radiographic film on the opposite side of the source is exposed when it is struck by radiation passing through the objects being tested. More radiation will pass through if there are cracks, breaks, or other flaws in the metal parts and will be recorded on the film. By studying the film, structural problems can be detected. Co-60 is used because it is an emitter of gamma rays which will penetrate metal parts. Co-60 has a half-life of 5.3 years and can be used in a chemically inert form held inside a sealed container.
The hydrogen atom nuclei can change the direction of spin to the opposite direction. For the direction to change, a radio frequency is given off by the coil. The signal that is used when MRI images
(yellow) Blue 489 455 nm Indigo 454 425 nm ______________3. Which has the greater energy, a photon of yellow Violet 424 400 nm light or a photon of green light? (green) ______________4. Which has the longer wavelength, light with a frequency of 7.32 X 1014 Hz or light with a frequency of 6.0 X 1014 Hz? (6.0 X 1014 Hz; it has lower frequency; wavelength and frequency
The energy of the three photons has three times the energy of the one photon, the energy of n photons of light is E=nh, E=nhc/ (2)(704nm)1.04 (3)(451nm). The energy of two photons corresponding to a wavelength of 451 blue light , is 1.04 times the energy of three photons corresponding to wavelength 704nm red light. f. A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10−6m. Could the electron make a transition from the ground state to a higher energy level? If it does make a transition, indicate which one.
Identify at least THREE everyday examples of waves that travel through each of the following: o solids o liquids o gases Three everyday examples of waves that travel through are sound waves, radio waves, and microwaves. 6. In what ways do different kinds of seismic waves differ from waves on water? Seismic