Growth of plant made visible to the eye by Indian invention

Inventions of Indians are amazeballs.They remained unique.One of them is crescograph.A crescograph is a device for measuring the plant growth.It was invented in the early 20th century by Sir Jagadish Chandra bose.He also experimented with temperature, chemicals, gases, and electricity.It uses a series of clockwork gears and a smoked glass plate to record the movement of the tip of a plant (or its roots) at magnifications of up to 10,000. Marks are made on the plate at intervals of a few seconds, demonstrating how the rate of growth varies under varying stimuli.

The electronic crescograph plant movement detector is capable of measurements as small as 1/1,000,000 of an inch. However, its normal operating range is from 1/1000 to 1/10,000 of an inch. The component which actually measures the movement is a differential transformer along with a movable core hinged between two points. A micrometer is used to adjust and calibrate the system. It could record plant growth, magnifying a small movement as much as 10,000,000 times.

Using the crescograph,the response of the plants to fertilizers, light rays and wireless waves were researched. The instrument received widespread acclaim, particularly from the Path Congress of Science in 1900. Many physiologists also supported his findings later on, using more advanced instruments.

                                                 Jagadish Chandra Bose

This invention proves the brilliance of Indians.

-Vishali Kannan