Electron Microscope

E C G stands for electro-cardiogram

Diagram shows typical hearbeats

Electon Microscopes enable analysis of very tiny entities.

Electron Microscopes can offer Magnification of up to two million times.

An ECG stands for electrocardiogram. This is a continuous graph of a patient’s heartbeat. It works by recording the electrical voltages in the heart. It can help in the monitoring of a patient as well as in the diagnosis of certain problems with the heart.
An ECG (graph) is plotted by measuring voltages between various points of the body. Twelve leads in total are connected to various parts of the body. A print out of a section of the graph is often done. The trace on the screen, similar to that of an oscilloscope can provide valuable information to medical staff when monitoring patients. A graph of two successive heartbeats are displayed below.

Electron Microscope

The electron microscope offers much greater magnification than a normal light microscope. It uses electrons to create an image of the object.
The electron beam originates from a cathode, is accelerated by a voltage and focussed by magnetic fields. The variation in number of electrons that penetrate through a thin specimen being examined, results in an image of the specimen being formed on a computer screen.

Modern electron microscopes can magnify objects up to two million times.
The electron microscope is an important tool in many research laboratories. It is often used to examine tiny living things such as microorganisms and cells.
Electron microscope image courtesy of

  Electron Microscope