Jagadish Chandra Bose

Sir Jagadish Chandra Bose was a remarkable polymath who changed how we understand the natural world.

A polymath is a person who excels in many different fields of study. Bose made groundbreaking contributions to physics, biology, and even literature as the father of Bengali science fiction. His work helped bridge the gap between the study of living organisms and the study of physical matter. Today, his legacy lives on through the many scientific principles he helped uncover. Even the Moon honors him, as a crater bears his name.

Bose was a pioneer in the field of microwave optics. He wanted to study the properties of radio waves that behave like light. To do this, he worked to reduce radio waves to the millimeter level. This means he studied waves with wavelengths of about 5 mm. He invented several essential tools to make these observations possible. These included the waveguide, the horn antenna, and the crystal radio detector.

His research showed that these invisible waves could pass through solid objects. In a 1895 demonstration, he showed waves traveling through two walls to trigger a bell. He even demonstrated that these waves could travel through a human body.

In the field of botany, Bose investigated plant physiology, which is the study of how plants function. He was interested in whether plants possessed a way of feeling or responding to their environment. To prove this, he invented a highly sensitive instrument called the crescograph.

This device was capable of measuring extremely slight movements in plant tissues. Using the crescograph, Bose observed that plants would quiver when they were injured. He used these results to argue for a parallelism between animal and plant tissues. This suggested that plants have a nervous-like mechanism to respond to stimuli.

Bose's scientific journey began in Mymensingh, in what is now Bangladesh. His father was a civil servant and a leader in the Brahmo Samaj. Because his father valued native culture, Bose received an early education in the Bengali language. He later attended St. Xavier's College in Calcutta, where a Jesuit priest named Father Eugene Lafont inspired his interest in science. Bose originally traveled to the University of London to study medicine. However, he had to abandon his medical studies due to ill health. He eventually moved to the University of Cambridge to study natural sciences. There, he conducted research alongside the famous Nobel Laureate, Lord Rayleigh.

Upon returning to India, Bose faced significant professional challenges due to the social climate of the time. In 1885, he became a professor of physics at Presidency College in Kolkata. At that time, Indian professors were often paid much less than their European colleagues. In fact, his initial salary was only one-third of what a European professor would receive. To protest this racial discrimination, Bose refused to accept any pay for his first three years. He used his own personal funds to support his scientific research projects. Eventually, his excellence was recognized, and his position was made permanent.

In 1917, Bose established the Bose Institute in Kolkata. This was a major milestone because it was the first interdisciplinary research center in Asia. An interdisciplinary center allows scientists from different fields to work together on the same problems. Bose served as the Director of the institute from its founding until his death in 1937.

His work helped expand the reach of experimental science across the entire Indian subcontinent. The institute remains one of the oldest and most important research centers in the region.

Bose's work in radio was distinct from the work of other famous inventors like Guglielmo Marconi. While Marconi focused on wireless telegraphy for communication, Bose was interested in the fundamental nature of the waves themselves. He was often critical of the patent system and preferred to share his discoveries openly. He even demonstrated his galena crystal detector in public lectures to help others learn.

His refusal to focus on commercial profit allowed him to push the boundaries of pure science. His life remains a testament to the power of curiosity and persistence.