1. EKG

2. Electromagnetic Radiation electromagnetic induction occurs without a wire for the current to travel through. electromagnetic induction occurs without a wire for the current to travel through. Moving any charged object (like a balloon rubbed on your head) will create… Moving any charged object (like a balloon rubbed on your head) will create… A moving magnetic field which in turn will create… A moving magnetic field which in turn will create… A moving electric field which causes… A moving electric field which causes… This continuously repeats This continuously repeats

3. EM wave

4. How fast do these waves go Since the waves travel due to a constant electromagnetic induction they always travel at the same speed. Since the waves travel due to a constant electromagnetic induction they always travel at the same speed. This speed is exceptionally fast, as a matter of fact it is the fastest anything can ever go This speed is exceptionally fast, as a matter of fact it is the fastest anything can ever go This speed is…. This speed is…. 3.0 x 10 8 m/s in a vacuum. 3.0 x 10 8 m/s in a vacuum.

5. What is an EKG Electrocardiogram ~it is also called an ECG (the name comes from the German Elektrokardiogramm) Electrocardiogram ~it is also called an ECG (the name comes from the German Elektrokardiogramm) - this is a graph produced by measuring the magnetic field produced by the electric current causing the contraction of the heart muscles.

6. History All muscles, including the heart, contract from electrical impulses. All muscles, including the heart, contract from electrical impulses. The first to look at the heart from an electrical point-of-view was Augustus Waller. The first to look at the heart from an electrical point-of-view was Augustus Waller. Willem Einthoven contiuned this work and used the string galvanometer that he invented. Willem Einthoven contiuned this work and used the string galvanometer that he invented. Einthoven assigned the letters P, Q, R, S and T to the various deflections on the graph. Einthoven assigned the letters P, Q, R, S and T to the various deflections on the graph. He was awarded the 1924 Nobel Prize for Physiology or Medicine for his discovery. He was awarded the 1924 Nobel Prize for Physiology or Medicine for his discovery.

7. Einthoven’s EKG

8. Einthoven’s Letters

9. Normal EKG A typical ECG tracing of a normal heartbeat consists of a P wave, a QRS complex and a T wave. A typical ECG tracing of a normal heartbeat consists of a P wave, a QRS complex and a T wave.

10. Human Heart

12. P-Wave The P wave is caused atrial contraction. The P wave is caused atrial contraction. The relationship of the P Wave to QRS complex may indicate presence of a heart block. The relationship of the P Wave to QRS complex may indicate presence of a heart block. Irregular or absent P waves could be arrhythmia. Irregular or absent P waves could be arrhythmia.

13. QRS complex The QRS complex is caused by the contraction ventricles, which are much bigger the atria. The QRS complex is caused by the contraction ventricles, which are much bigger the atria. Therefore, this is much larger than the other waves. Therefore, this is much larger than the other waves.

14. T-Wave The T wave represents the repolarization of the ventricles muscles. This is the muscles getting ready to contract again. The T wave represents the repolarization of the ventricles muscles. This is the muscles getting ready to contract again. The QRS complex hides the atrial repolarization. The QRS complex hides the atrial repolarization.