Double Slit Interference Young’s double slit experiment demonstrates how light waves produced an interference pattern The experiment is shown below Young’s double-slit experiment arrangement When a...
Demonstrating Two Source Interference Interference of sound, light and microwaves can be demonstrated with slits or diffraction gratings Using Water Waves Two-source interference in can be demonstr...
Interference & Coherence Interference occurs when waves?overlap?and their resultant displacement is the?sum of the displacement of each wave This result is based on the principle of superpositi...
What is Diffraction? Diffraction is the?spreading out?of waves when they pass an obstruction This obstruction is typically a narrow slit (an aperture) The extent of diffraction depends on the width...
Stationary Waves Stationary waves, or standing waves, are produced by the superposition of two waves of the same frequency and amplitude travelling in opposite directions This is usually achieved b...
Edexcel IGCSE Chemistry 復習筆記 4.8.3 Condensation Polymers Condensation Polymers Condensation polymers are formed when?two different monomers?are linked together with the?removal?of a smal...
Edexcel IGCSE Chemistry 復習筆記 4.8.2 Disposal of Addition Polymers Disposal of Addition Polymers Addition polymers are formed by the joining up of many small molecules with?strong C-C bond...
Edexcel IGCSE Chemistry 復習筆記 4.8.1 Addition Polymers Monomers Polymers are large molecules of?high relative molecular mass?and are made by linking together large numbers of smaller molec...
Edexcel IGCSE Chemistry 復習筆記 4.7.2 Practical: Preparation of Ethyl Ethanoate Practical: Preparation of Ethyl Ethanoate Aim: To prepare a small sample of ethyl ethanoate Diagram: &...
The Principle of Superposition The principle of superposition states that?when two or more waves with the same frequency travelling in opposite directions overlap, the resultant displacement is the...
Edexcel IGCSE Chemistry 復習筆記 4.7.1 Esters The Esters Making Esters Alcohols and carboxylic acids react to make esters in?esterification?reactions Esters are compounds with the functional...
Edexcel IGCSE Chemistry 復習筆記 4.6.2 Reactions of Carboxylic Acids Reactions of Carboxylic Acids The carboxylic acids behave like other acids They react with?metals?to form a salt and hydr...
