Seminars are an important channel for exchange of information and ideas. Lectures highlight and reinforce essential knowledge in particular disciplines, guide us in reading and research and stimulate the interest in the subject. Seminars offer intensive exposure to a topic through presentations and discussions led by multiple experts. To make science learning more effective, science seminar has been arranged in Delhi public School, Coimbatore on 18.08.2018 for the students of classes IX, X and XI. The topics were both from biology and physics.
An environmental hazard is a substance, a state or an event which has the potential to threaten the surrounding natural environment or adversely affect people's health, including pollution. Imparting the knowledge of agricultural health hazards due to pesticides and their effects on human health is very indispensable to the world of students. Dr. K. Ramesh, Principal scientists from Central Institute for Cotton Research, Coimbatore was invited to give a lecture on environment and health .School Principal Mr. Ahamad Azad greeted the guest followed by the welcome address of Rashika gopi of class XI.
Dr. Ramesh spoke about the Human intervention and environment. The various types of pest and the action of the pest in the host plant were discussed. He specified the use and misuse of pesticides. How to identify the toxicity of various types of pesticides by the specific colour mentioned in the pesticide container like bright red is for extremely toxic, bright yellow is for highly toxic, bright blue is for moderately toxic and bright green is for slightly toxic. Due to bio magnifications the pests used by the farmers magnify and affect the consumers. The health effects of pesticides, the precautions to be taken and the integrated pest management (cultural method, host plant resistance, mechanical method, legal method, biological method, chemical method and behavioral method) were discussed at a greater length.
The seminar ignited the young minds to think and ponder about the alternative methods to control pest and how to lead a healthy life by eating fresh agricultural products. The seminar ended with a positive note about magnification of the knowledge to conserve nature.
“It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we say about nature” -Niels Bohr
Study of physics is the study of nature. Light is a central phenomenon in nature which always captivates us. Dr. Barathi Kannan, Associate professor from Ramakrishna Vidyalaya Arts and Science College was invited to deliver a lecture on the topic LASER.
Principal Mr.Ahamad Azad welcomed the guest and welcome speech was given by Mukilan of class XI. Dr. Bharathi Kannan kindled the young minds of the students by introducing about the nature of light and the properties of light. The science behind the nature of the light was strikingly explained by him with the theories of different scientists.
Theory behind Laser is light amplification by stimulated emission and radiation. Relating the dual property of light with the Hindu mythology was the highpoint of the lecture. History, types, properties, uses and basic concepts of laser also been clarified in a meticulous way. He also requested the students to be the seed for the future science inventions and development.