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Google celebrates inventor of the ECG with Doodle: Willem Einthoven Wiki, Bio, Age, Family, ECG

Willem Einthoven Wiki

Willem Einthoven was a Dutch physiologist who is best known for inventing the first electrocardiograph (ECG) – a simple test used to check the heart’s rhythm and electrical activity.
Willem Einthoven Wiki
Willem Einthoven (21 May 1860 – 29 September 1927) was a Dutch doctor and physiologist. He invented the first practical electrocardiogram (ECG or EKG) in 1895 and received the Nobel Prize in Medicine in 1924 for it (“for the discovery of the mechanism of the electrocardiogram”).

Willem Einthoven Biography

Willem Einthoven Wiki
Einthoven was born in Semarang on Java in the Dutch East Indies (now Indonesia), the son of Louise Marie Mathilde Caroline (de Vogel) and Jacob Einthoven. His father, a doctor, died when Einthoven was a child. His mother returned to the Netherlands with her children in 1870 and settled in Utrecht. His father was of Jewish and Dutch descent, and his mother’s ancestry was Dutch and Swiss. In 1885, Einthoven received a medical degree from the University of Utrecht. He became a professor at the University of Leiden in 1886.


In 1902, he became member of the Royal Netherlands Academy of Arts and Sciences.
He died in Leiden in the Netherlands and is buried in the graveyard of the Reformed Church at 6 Haarlemmerstraatweg in Oegstgeest.

Willem Einthoven Work

Before Einthoven’s time, it was known that the beating of the heart produced electrical currents, but the instruments of the time could not accurately measure this phenomenon without placing electrodes directly on the heart. Beginning in 1901, Einthoven completed a series of prototypes of a string galvanometer. This device used a very thin filament of conductive wire passing between very strong electromagnets. When a current passed through the filament, the magnetic field created by the current would cause the string to move. A light shining on the string would cast a shadow on a moving roll of photographic paper, thus forming a continuous curve showing the movement of the string. The original machine required water cooling for the powerful electromagnets, required 5 people to operate it and weighed some 270 kilograms. This device increased the sensitivity of the standard galvanometer so that the electrical activity of the heart could be measured despite the insulation of flesh and bones.


Although later technological advances brought about better and more portable EKG devices, much of the terminology used in describing an EKG originated with Einthoven. His assignment of the letters P, Q, R, S and T to the various deflections is still used. The term Einthoven’s triangle is named for him. It refers to the imaginary inverted equilateral triangle centered on the chest and the points being the standard leads on the arms and leg.
Willem Einthoven Wiki
After his development of the string galvanometer, Einthoven went on to describe the electrocardiographic features of a number of cardiovascular disorders. Later in life, Einthoven turned his attention to the study of acoustics, particularly heart sounds which he researched with Dr. P. Battaerd.
In 1924, Einthoven was awarded the Nobel Prize in Medicine for inventing the first practical system of electrocardiography used in medical diagnosis.

What is Einthoven best known for?

In 1924, Einthoven was awarded the Nobel Prize for Physiology or Medicine for his discovery of electrical properties of the heart.


He discovered these properties using the electrocardiograph – a practical instrument that is still used today to diagnose heart disease.

What is an ECG?

The NHS website explains: “An electrocardiogram (ECG) is a simple test that can be used to check your heart’s rhythm and electrical activity.

Google celebrates inventor of the ECG with Doodle

Today, Google is celebrating what would have been the 159th birthday of Willem Einthoven with a special Doodle.
Einthoven was a Dutch physiologist who is best known for inventing the first electrocardiograph (ECG) – a simple test used to check the heart’s rhythm and electrical activity.



He began his work on the electrical currents of the heart in 1895 and received his Nobel Prize “for the discovery of the mechanism of the electrocardiogram” in 1924. Einthoven died three years later.
ECGs are carried out daily by doctors around the world and are likely responsible for saving millions of lives.
To celebrate, Google has launched a Doodle, featuring a cartoon depiction of Einthoven, as well as his ECG machine.

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