A-Level Biology - A-Level Biology - Magnification & Resolution - Object & Image | Calculations (2026/27 exams)

⭐️ Check out our website https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. The basics of microscopy * The definition of a microscope * The difference between an 'object' and an 'image' 2. The concepts of magnification and resolution * Defining magnification as how many times larger an image is than the object * Defining resolution as a measure of the detail and clarity of an image 3. The formula for calculating magnification * Magnification = Image Size / Object Size 4. How to convert between different units of length * Converting between centimetres (cm), millimetres (mm), micrometres (µm), and nanometres (nm) 5. A worked example showing how to calculate the actual size of a cell from its image size and magnification. *** CHAPTERS *** 0:00 Introduction to magnification and resolution 0:26 What is a microscope? (Object vs Image) 1:08 What are magnification and resolution? 2:29 How to calculate magnification 2:57 Converting units of length (cm, mm, µm, nm) 3:28 Worked example: calculating the actual size of a cell *** PLAYLISTS *** https://youtube.com/playlist?list=PLidqqIGKox7VzYfPIVt8T09xOLNcolCe4&si=8JmDajxjtba6rdc3 https://youtube.com/playlist?list=PLidqqIGKox7UZ3mWhbHv2aA_1vnbsfRPq&si=q3hEKdA4v7kbfwMe https://youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh&si=orIUwL3o2jOoiYjT https://youtube.com/playlist?list=PLidqqIGKox7X5UFT-expKIuR-i-BN3Q1g&si=DcihOwUkd9oWbbdp https://youtube.com/playlist?list=PLidqqIGKox7WeOKVGHxcd69kKqtwrKl8W&si=Y8MsO-FK948jnxpS https://youtube.com/playlist?list=PLidqqIGKox7UVC-8WC9djoeBzwxPeXph7&si=-7i5Iq7yOeJrhtu6 https://youtube.com/playlist?list=PLidqqIGKox7VKJD2WxRhoKaI6JGLVean8&si=NH_Q1ujhVgACM2FU #Biology #study #revision #school #exam #AQA #OCR #Edexcel #IB #AP