How does a Oximeter Work? + more videos | #aumsum #kids #science #education #children

Buy AumSum Merchandise: https://www.aumsum.com How does a Pulse Oximeter Work? Pulse Oximetry is a test carried out using a Pulse Oximeter. This test is used to measure the oxygen level in our blood. Pulse Oximetry is based on the principle that Oxygenated Hemoglobin and Deoxygenated Hemoglobin differentially absorb red and infrared light. Hemoglobin is a protein present inside our red blood cells, it transports oxygen from lungs to cells in our body. Oxygenated Hemoglobin absorbs greater amounts of infrared light and lower amounts of red light as compared to Deoxygenated Hemoglobin. Now, a Pulse Oximeter has LEDs which emit red as well as infrared light. These lights pass through our finger and are detected by a photodiode on the opposite side. Finally, by measuring changes in the light absorption a Pulse Oximeter is able to give us the Oxygen level in our blood. References: https://www.sciencedirect.com/science/article/pii/S095461111300053X https://www.who.int/patientsafety/safesurgery/pulse_oximetry/who_ps_pulse_oxymetry_tutorial1_the_basics_en.pdf https://www.healthline.com/health/pulse-oximetry#how-it-works Timecodes 0:00 - How does a Pulse Oximeter Work? 1:17 - How do vaccines work? 2:23 - Why cant we smell and taste when we have a cold? 3:32 - Why is it hard to cure Common Cold? 4:37 - Should we Workout when we have Cold? 5:38 - Why do we get Headaches? 6:43 - Why do we get Nosebleeds? 7:43 - What is Earwax? 8:32 - Why do we shiver? 9:38 - Where does the fat go when you lose weight?