particles‚ in the form of radiation‚ until a stable nucleus is produced; this is called the radioactive decay. Four isotopes as well as their uses are mentioned subsequently. Americium: Americium is a silvery metal‚ which corrodes slowly in air and is soluble in acid. It has the isotopes: Am-243‚ Am-242 and Am-241‚ with a half-life of 432 years‚ which was the first isotope to be isolated. The isotope Am-241 decays by emitting alpha particles and intense gamma radiation to become neptunium-237
Premium Radioactive decay Chemical element Ionizing radiation
The current flows through the circuit since the temperature of the two junctions are different. IR Sensor -This device emits and/or detects infrared radiation to sense a particular phase in the environment. Generally‚ thermal radiation is emitted by all the objects in the infrared spectrum. The infrared sensordetects this type of radiation which is not visible to human eye. Touch
Premium Infrared Electromagnetic radiation
band divided 79channels (1mhz=1600t/s) Quantum energy of microwave photons is in the range 0.00001 to 0.001 eV Human body transparent to microwaves Quantum States: Molecular rotation and torsion Quantum million times lower than X-rays(ionizing radiation=damage) Radio astronomy 30ghz – 1Thz Infrared(IR)- “infra” – below‚ Region of spectrum‚ Below the visible red. Used: Tracking‚ Night vision‚ remote controls FarInfrared(FIR) – LF portion of IR‚ waves are thermal‚ penetrates skin cells NearInfrared
Premium Electromagnetic radiation Photon Radio
Test# 2 Name: Group: | |Question text |Criteria | |Q1 |[pic] | | | |Where I0 is the initial intensity of photons and [pic] is the linear……………..which describes the fraction of beam of ………rays or |
Free Electromagnetic radiation Light Electron
Ms. Wilson Chem‚ Blk 10 31 October 2012 Atomic Emission Spectra Lab Atomic spectroscopy is the determination of elemental composition by its electromagnetic or mass spectrum. An arrangement of all wavelengths of electromagnetic radiation is called the spectrum; the plural being spectra. As light passes through a prism‚ the frequencies of light emitted by an element separate into separate lines to give the atomic emission spectrum of the element. There are two spectrums in the lab: the incandescent
Premium Photon Electromagnetic radiation Light
in space—instead of bullets. This explains how rainbows work. In fact‚ light is both. This "wave-particle duality" is one of the most confusing—and wonderful—principles of physics. Light is radiant energy‚ usually referring to electromagnetic radiation that is visible to the human eye‚ and is responsible for the sense of sight.[1] Visible light is usually defined as having a wavelength in the range of 400 nanometres (nm)‚ or 400×10−9 m‚ to 700 nanometres – between the infrared‚ with longer wavelengths
Premium Light Electromagnetic radiation
measure the amount of radiation evolved and graphical interpretations did allow calculation of the half-life. Experimental: The counter was measured in the background Beta-radiation count for five minutes. The readings were recorded in the prepared table. The activity of the standard Beta-emitter was recorded and measured for five minutes. The activity of the unknown Beta-emitter was recorded and measured for five minutes. The activity of the standard for the background radiation. Subtracted the
Premium Ionizing radiation Mathematics Isotope
predict when a particular radioactive nucleus will emit this energy but a large number of materials are said to have a ‘half life’. The half life is the time it takes for half the nuclei to emit their radiation. 1. Describe and compare the nature of emissions from the nuclei of atoms as radiation of alpha α and beta β particles and gamma γ rays in terms of: (6) Ionising power Penetrating power Effect of magnetic field Effect of electric
Premium Electron Sun Ionizing radiation
NATIONAL SENIOR CERTIFICATE EXAMINATION NOVEMBER 2008 PHYSICAL SCIENCES: PAPER I Time: 3 hours PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY 1. This paper consists of: • a question paper of 17 pages • a data and formula booklet of 3 pages (i – iii) Please make sure that your question paper is complete. 2. 3. 4. 5. 6. Remove the pages of data and formulae from the middle of this question paper. Use the data and formulae whenever necessary. Read the questions carefully. In Question 1 answer 1
Premium Infrared Electromagnetic radiation Light
wanted to do I would go find food supplies and supplies to build a shelter‚ I would gather a flashlight and some batteries; all the essentials. I would attempt to build a shelter and I would get hide all my food in a place that it would not get radiation poisoning. I would get games- even though you wouldn’t think to play games while you’re getting bombed- I’d also take all my favourite things I own and bring them with me into my shelter‚ also I would gather everyone I love to come and stay in this
Premium English-language films Nuclear weapon Debut albums