Ultra violet light - Study guides, Class notes & Summaries

Ozone stratosphere above the earth consists of molecules containing... 3 oxygen atoms (O3) The oxygen we breathe contains how many atoms in each molecule? two atoms (O2) The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the earth 7 and 28 miles the ozone layer is formed by what? Ultra violet light from the sun acting on oxygen molecules,absorbs and scatter UV light from the sun What does the Ozone layer do? prevents h...

Oregon Barber state exam possible questions and Correct Answers Relative degree of hydrogen ion in acidic and alkaline solutions is? - CORRECT ANSWER-PH ( Potential Hydrogen ) Direction hair flows on the skins surface? - CORRECT ANSWER-Grain Ringworm of the head? - CORRECT ANSWER-tinea capitis Water 50% acidic & 50% Alkaline is denoted by the number ______? - CORRECT ANSWER-7 Sensory nerves or afferent nerves are impulses of what? - CORRECT ANSWER-Touch, cold, heat, sight, smell, pa...

Invisible Light - ANSWER-Radiowaves: (longest wavelength)- AM,Fm, TV, Cell Microwaves: heating food by vibrating H2O Infrared: remote signals, thermal energy/free heat Visible: ROYGBIV, light we can see Ultra-Violet: sunlight, forensics X-ray: medical use Gamma Rays Cosmic Rays Wave-like behavior - ANSWER-Electromagnetic radiation consists of electric and magnetic fields oscillating right angles next to each other and in its direction of movement. 4 characteristics of waves - ANSWER...

What is the order of the electromagnetic spectrum from high to low energy? - Answer Gamma rays, x-rays, UV, visible, IR, microwaves, radio What transitions occur in the microwave spectrum? - Answer Rotational What transitions occur in the IR spectrum? - Answer Vibrational with accompanying rotational fine structure bands What transitions occur in the UV-vis spectrum? - Answer Electronic In quantum mechanics, energy levels exist as multiples of what number? - Answer Planck'...

Edexcel IGCSE Physics, question and answer average speed = distance / time v = d / t Standard Unit for mass (m) kilogram (kg) Standard Unit for distance (d) or displacement (s) metre (m) Standard Unit for speed (s) or velocity (v) metre/second (m/s) Standard Unit for acceleration (a) metre/second² (m/s²) Standard Unit for Force (F) Newton (N) Standard Unit for time (t) Second (s) Standard Unit for gravitational field strength (g) ...

ABO PRACTICE EXAM PART ONE QUESTIONS WITH 100% CORRECT ANSWERS. the wavelength of the infrared waves in the electromagnetic spectrum are longer than visible red light waves the Geneva Lens Measure is calibrated for a refractive index of 1.530 A lens made from 2 convex surfaces has against motion A lens reads +4.25D in the vertometer. If the ocular curve is -4.00D, what is the front base curve? +8.25D Which of these front base curves would be suitable for a -300D meniscus lens? +4.50 A...

What term correctly identifies the reduction in voltage, caused by resistance, that occurs between the power supply and the load? Voltage drop Which of the following lens shades is most effective at reducing the brilliancy of light and screening out the harmful infraded ultra- violet rays produced during arc welding? #12 shade lens What colors are appropriate for the oxygen hose on oxyacetylene cutting and welding equipment? Either a black hose or a green hose are approved When oxyacety...

CIP Level 1 Questions and Answers Graded A+ You are the NACE inspector on a tank lining project where a 50% solids epoxy tank lining is being applied. After application of the 19 coat, you notice small blisters in some areas of the applied lining. Your FIRST preferred course of action is to: A. Break the blisters to see what's inside B. Document the problem and advise the contractor and owner's representative C. Document the problem and advise the contractor D. Extract any liquid that m...

HESI RN EXIT EXAM 2024 ACTUAL EXAM / HESI EXIT COMPREHENSIVE REVIEW TEST BANK/PHARM HESI PRACTICE REAL EXAM LATEST VESION 2024 QUALIFIED QUESTIONS AND CORRECTLY HIGHLIGHTED ANSWERS ALREADY GRADED A+. Which medications should the nurse caution the client about taking while receiving an opioid analgesic? A. Antacids. B. Benzodiazepines. C. Antihypertensives. D. Oral antidiabetics. - ANSWER- B. Benzodiazepines. A client is prescribed 1 mcg/kg/min of dobutamine hydrochloride via IV ...

CWB Level 2 All Modules Exam - Questions and Answers Fatigue cracks are one of several issues that threaten the life of welded structures. They begin as: A) Minute cracks and then grow under static loads B) Large cracks and then grow without the requirement for load C) Minute cracks and then grow under fluctuating stress D) Large cracks and then grow under static loads Radiographic inspection can be performed with the following types of radiation. A) Ultrasonic and magnetic particle B) Infrare...