Born: November 30, 1858
Died: November 23, 1937
Achievements: He was the first to prove that plants too have feelings. He invented wireless telegraphy a year before Marconi
patented his invention.
Jagdish Chandra Bose was an eminent Indian scientist. He was the first
to prove that plants and metals too have feelings.
Jagdish Chandra Bose was born on November 30, 1858 in Mymensingh (now
in Bangladesh). His father Bhagabanchandra Bose was a Deputy Magistrate.
Jagadish Chandra Bose had his early education in village school in
Bengal medium. In 1869, Jagadish Chandra Bose was sent to Calcutta to
learn English and was educated at St.Xavier's School and College. He was
a brilliant student. He passed the B.A. in physical sciences in 1879.
In 1880, Jagdishchandra Bose went to England. He studied medicine at London
University, England, for a year but gave it up because of his own ill
health. Within a year he moved to Cambridge to take up a scholarship to
study Natural Science at Christ's College Cambridge. In 1885, he
returned from abroad with a B.Sc. degree and Natural Science Tripos (a
special course of study at Cambridge).
After his return Jagadish Chandra Bose, was offered lectureship at
Presidency College, Calcutta on a salary half that of his English
colleagues. He accepted the job but refused to draw his salary in
protest. After three years the college ultimately conceded his demand
and Jagdish Chandra Bose was paid full salary from the date he joined
the college. As a teacher Jagdish Chandra Bose was very popular and
engaged the interest of his students by making extensive use of
scientific demonstrations. Many of his students at the Presidency
College were destined to become famous in their own right. These
included Satyendra Nath Bose and Meghnad Saha.
In 1894, Jagadish Chandra Bose decided to devote himself to pure
research. He converted a small enclosure adjoining a bathroom in the
Presidency College into a laboratory. He carried out experiments
involving refraction, diffraction and polarization. It would not be
wrong to call him as the inventor of wireless telegraphy. In 1895, a
year before Guglielmo Marconi patented this invention, he had
demonstrated its functioning in public.
Jagdish Chandra Bose later switched from physics to the study of metals
and then plants. He fabricated a highly sensitive "coherer",
the device that detects radio waves. He found that the sensitivity of
the coherer decreased when it was used continuously for a long period
and it regained its sensitivity when he gave the device some rest. He
thus concluded that metals have feelings and memory.
Jagdish Chandra Bose showed experimentally plants too have life. He
invented an instrument to record the pulse of plants and connected it to
a plant. The plant, with its roots, was carefully picked up and dipped
up to its stem in a vessel containing bromide, a poison. The plant's
pulse beat, which the instrument recorded as a steady to-and-fro
movement like the pendulum of a clock, began to grow unsteady. Soon, the
spot vibrated violently and then came to a sudden stop. The plant had
died because of poison.
Although Jagdish Chandra Bose did invaluable work in Science, his work
was recognized in the country only when the Western world recognized its
importance. He founded the Bose Institute at Calcutta, devoted mainly to
the study of plants. Today, the Institute carries research on other
Jagdish Chandra Bose died on November 23, 1937.