stick–slip peeling events. For the observed 15-keV peak in X-ray energy‚ various models5‚6 give a competing picture of the discharge process‚ with the length of the gap between the separating faces of the tape being 30 or 300 mm at the moment of emission. The intensity of X-ray triboluminescence allowed us to use it as a source for X-ray imaging. The limits on energies and flash widths that can be achieved are beyond current theories of tribology. When a continuous medium is driven far from equilibrium
Premium X-ray Light Electromagnetic radiation
Objectives 1-Describe the periodic trend in atomic radius and relate it to atomic structure 2- Describe the periodic trend in electronegativity and relate it to atomic structure Did you know? There are atoms with no electronegativity because electro negativity refers to the attraction of atoms of electrons in a compound; elements that do not form are assigned no electronegativity values. Atomic Radius ≠ Ionization Energy As you move from left to right on the periodic table‚ the number of
Premium Periodic table Atom Electron configuration
Observing Flames and Specs through a Spectroscope By: Seif Alkhouri Cristian Plancia-Mata Charlotte Maxwell Suryansh Kumar Evan Hatton J. Immel Ph.D Introduction Spectroscopy is the study of the interaction between matter and radiated energy. English philosopher Roger Bacon(1214-1294) was the first person to recognize that if sunlight passes through water it splits into colors. Around four centuries ago‚ Isaac Newton originated the title “spectrum” to label the shade of rainbows put
Premium Electrolysis Light Sodium
Introduction: This investigation used spectroscopy to evaluate light absorption in different solutions. A spectrophotometer was used in the lab to determine these values. A spectrophotometer is an apparatus used to “measure the absorption of radiation in the visible and UV regions of the spectrum and allows precise at a particular wave length” (Jones et al.‚ 2007). The amount of light absorbed by a substance is directly in relation to the concentration of the solute and also the wavelength moving
Premium Electromagnetic radiation Visible spectrum Light
Automobile Emissions Control Abstract - The Automobile emissions control focus on the different types of technologies that have been introducing from early 1960’s to reduce the air pollution. They describe the different control methods involved in all the devices employed for the purpose of controlling pollution. This paper entails the information of impact of using these control techniques and devices. The detrimental effects of pollutants from automobile emissions on environment
Premium Air pollution Gasoline
Discussion Question 1 •Resource: Emissions Calculator Web site •Due Date: Day 2 [Main forum] •Go to the Emissions Calculator Web site at http://airhead.cnt.org/Calculator/?sid=a743a150a5f5ff4c72817e723b7c8c14 •Fill out the survey to the best of your knowledge to calculate the total pounds of air pollution your household emits. •Post a response to the following: What was your highest contributor? What can you do to lower your total? What is your greatest challenge in lowering your total
Premium Air pollution Carbon dioxide Pollution
Greenhouse gas emission What is greenhouse gas? A greenhouse gas is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. Many greenhouse gases occur naturally‚ such as water vapor‚ carbon dioxide‚ methane‚ nitrous oxide‚ and ozone. Others such ashydrofluorocarbons (HFCs)‚perfluorocarbons (PFCs)‚ andsulfur hexafluoride (SF6) result only from human industrial processes. Greenhouse gases act like a blanket around Earth‚ trapping energy in the atmosphere and causing
Premium Greenhouse gas Carbon dioxide Global warming
Ju Young – Arctic Ice Investigation ****************************************************************************************** Research Question: How do greenhouse gas emissions give an impact to the Arctic sea ice? Hypothesis: 1. A statement that predicts what will happen. Use the structure: ‘If…then…because…’ 2. For the ‘because’ part you need to give scientific reasoning so after you have done your research‚ state in parentheses ( ) the author of the source that helped you decide on your
Premium Carbon dioxide Greenhouse gas Arctic shrinkage
Topic: Carbon emission abatement can be achieved by various means‚ for example‚ regulation (controlling the emitting of carbon on the same basis as governments control other pollutants)‚ by subsidising consumption of renewable technologies using wind or the sun‚ by subsidising non-carbon polluting technologies and by supporting research into innovative green technologies. Another way of achieving reduction in carbon emissions is a pricing scheme such as a cap-and-trade emissions trading scheme (ETS)
Free Carbon dioxide Global warming Kyoto Protocol
Absorption & Emission of Light Stimulated Absorption & Emission‚ Spontaneous Emission E2 Incident radiation hν hν Emitted & transmitted radiation E1 Resonance condition E2-E1=hν • Rate of stimulated emission is: −dN1/dt = N1B1->2 ρ(ν) • Rate of absorption is the sum of the rated due to stimulated emission and spontaneous emission: −dN2/dt = N2B2->1 ρ(ν) + N2A2->1 where B1->2 is the Einstein transition probability for induced absorption‚ B2->1 is the Einstein transition probability
Premium Photon Atom Electromagnetic radiation