Roadmap for Answer Writing Introduction Global Water Crisis Overview: Briefly introduce the acute shortage of clean and safe freshwater, emphasizing its significance as a global issue. Mention the recognition of access to clean water under Sustainable Development Goal 6 (SDG-6). Reasons for Freshwater Scarcity Increasing Population: Highlight ...
Model Answer Introduction The 2014 Nobel Prize in Physics was awarded to Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura for their groundbreaking invention of Blue Light Emitting Diodes (LEDs) in the 1990s. This innovation has profoundly transformed various aspects of human life globally, particulaRead more
Model Answer
Introduction
The 2014 Nobel Prize in Physics was awarded to Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura for their groundbreaking invention of Blue Light Emitting Diodes (LEDs) in the 1990s. This innovation has profoundly transformed various aspects of human life globally, particularly in India.
Body
Energy Efficiency and Cost Savings
Blue LEDs are crucial for creating white LED lights, revolutionizing the approach to lighting. The Indian government’s UJALA scheme has distributed over 360 million LED bulbs nationwide as of 2021. This initiative has led to significant reductions in household electricity costs and national energy consumption.
Catalyst for Digital Revolution
Blue LEDs are integral to the screens of digital devices, such as smartphones and laptops. This technology has fueled digital connectivity, exemplified by the Pradhan Mantri Gramin Digital Saksharta Abhiyan, which aims to digitally educate 60 million rural households using affordable LED-screen devices.
Medical Applications and Healthcare
Blue LEDs are vital in medical treatments, particularly in phototherapy for neonatal jaundice. Devices like the Brilliance Pro, developed by the Indian company D-Rev, utilize blue LEDs to provide affordable and effective treatment for thousands of infants annually.
Innovations in Agriculture
In controlled-environment agriculture, blue LEDs enhance plant growth. Indian startups like Triton Food Works employ LED lighting in hydroponic farms, enabling year-round production regardless of climatic conditions.
Environmental Sustainability
LED lights contribute to environmental sustainability by reducing energy consumption and extending bulb lifespan, thereby lowering carbon emissions. This aligns with India’s commitment to reduce carbon intensity under the Paris Agreement.
Conclusion
The advent of Blue LEDs has transformed numerous sectors of everyday life in India, from energy conservation and digital literacy to healthcare and sustainable agriculture. This underscores the profound societal changes that innovative scientific research can inspire.
See less
Model Answer Introduction The world is facing an acute shortage of clean and safe freshwater, driven by factors such as population growth, climate change, and pollution. Innovative technologies are essential to address this crisis. Here are three alternative technologies that can help solve the fresRead more
Model Answer
Introduction
The world is facing an acute shortage of clean and safe freshwater, driven by factors such as population growth, climate change, and pollution. Innovative technologies are essential to address this crisis. Here are three alternative technologies that can help solve the freshwater scarcity issue, along with their merits and demerits.
1. Desalination Technologies
Desalination involves converting seawater into freshwater by removing salt and impurities. This technology is particularly beneficial for coastal regions facing freshwater shortages. For instance, the Sorek desalination plant in Israel supplies approximately 20% of the country’s drinking water.
2. Rainwater Harvesting
Rainwater harvesting captures and stores rainwater for reuse, especially in areas with seasonal rainfall. Traditional methods, such as Johads in Rajasthan, effectively recharge groundwater and provide irrigation water.
3. Wastewater Recycling and Reuse
This technology treats and reuses wastewater for various applications, including industrial use and potable water. Singapore’s NEWater project is a notable example, meeting about 40% of the country’s water needs.
Conclusion
In conclusion, tackling freshwater scarcity requires a combination of innovative technologies like desalination, rainwater harvesting, and wastewater recycling, along with effective policies and community involvement to ensure sustainable water access.
See less