Optical fibres - Study guides, Class notes & Summaries

Longitudinal wave - ANSWER-Particle vibration is parallel to direction of wave propagation Examples of a longitudinal wave - ANSWER-Sound waves, seismic p-waves Transverse wave - ANSWER-Particle vibration is perpendicular to direction of wave propagation Only transverse waves can be polarised Examples of a transverse wave - ANSWER-Electromagnetic radiation, seismic s-waves Particle displacement - ANSWER-The distance of a particle from its equilibrium position in given direction Amplitud...

AQA A LEVEL BIOLOGY Paper 1 2024 What is the function of the cell membrane? - ANS To control what enters and leaves the cell, acts as a barrier between the cell and its environment. What structural feature of the cell membrane allows substances to enter/leave? - ANS Partially permeable What is the fluid mosaic model? - ANS States that a membrane is a fluid structure (because phospholipids are constantly moving) with a "mosaic" of various proteins embedded in it Describe t...

AQA A-Level Biology Unit 2 (Guaranteed success 2023 ORGANELLE - CORRECT ANSWER-A specialised part of a cell that performs a particular function. MAGNIFICATION - CORRECT ANSWER-The ability of a lens to enlarge the size of an object. Calculated by dividing the image size by the real size of the object. RESOLUTION - CORRECT ANSWER-The ability of a microscope to distinguish two adjacent points as separate from each other. MICROMETER μm - CORRECT ANSWER-An SI unit of measurement which is...

GCSE Geography AQA: Human Geography Questions and Answers Graded A+ What is urbanisation? The growth of a country's population living In an urban area What percentage of the world are urbanised? More than 50% (3.9 billion) of the world live in urban areas Why does urbanisation vary around the world? It varies between HIC which are more economically developed and LIC which are less economically developed. HIC have been industrialised so people already live in city's. What causes urbanisation...

Hematology questions What is the preferred anatomical site used to obtain a bone marrow aspiration on an adult? - Iliac crest Can use sternum or Vertebrae What anatomical site is used to obtain a bone marrow aspiration on an infant? - tibia Why is the bone marrow preparation examined with a low power objective? - To assess: for dilution with peripheral blood quality of marrow quality of stain quantity of megakaryocytes cellularity (fat to marrow ratio) for clusters of tumor ...

Optical fibre is the technology associated with data transmission using light pulses travelling along with a long fibre which is usually made of plastic or glass and this notes provides in depth knowledge about optical fibres in an organized manner.

Capsule (slime) - ANSWER Protects the bacteria from attack by cells of the immune system. Flagellum - ANSWER Rotates to make the cell move. Viruses - ANSWER Acellular. Invade and reproduce inside the cells of other organisms. What is magnification? - ANSWER How much bigger the image is that the specimen. What is resolution? - ANSWER The ability of the microscope to distinguish between two points that are close together. Light/optical microscopes - ANSWER Uses light. Max resolut...

Test Bank Solution Manual for Optical Fibres & Refraction + Waves and Diffraction Explain how the glass cladding around the optical fibre's core improves the security of data being transmitted through it give a reason why this is important. - Answers *light does not enter the cladding so cannot pass across from one fibre to a neighbouring fibre* (1) fibres without cladding can allow light to pass between fibres when the surface of the fibre becomes scratched (1) personal data (...

AQA A Level Physics Questions and Answers 2022/2023 Longitudinal wave Particle vibration is parallel to direction of wave propagation Examples of a longitudinal wave Sound waves, seismic p-waves Transverse wave Particle vibration is perpendicular to direction of wave propagation Only transverse waves can be polarised Examples of a transverse wave Electromagnetic radiation, seismic s-waves Particle displacement The distance of a particle from its equilibrium pos...

Wave Properties and Optical Fibres Exam Solution Manual Already Passed Amplitude - Answers A wave's maximum displacement from its equilibrium position. Antinode - Answers A position of maximum displacement in a stationary wave. Cladding - Answers A protective layer on an optical fibre to improve tensile strength, prevent scratching, and prevent signal transfer between adjacent fibres. Coherence - Answers Waves are coherent if they have the same wavelength and frequency, with a fixed phas...