Class Notes 4 You

Debate of global warming and climate change is compelling the world to move from fossil-based energy towards clean and green energy. Issues with conventional energy generation : Coal - Carbon emission and limited supply Nuclear energy- Technological barriers and involves high risk Biofuels- Contributes to deforestation, soil erosion and unsustainable in nature. In this context Solar energy has gained immense popularity due to benefits it offers compared to conventional ones: Limitless- Sun as a source can never dry up and can be used continuously without fearing end of supply. Conventional sources such as coal may dry up in future. Clean energy- Non-polluting and zero greenhouse gas contribution. Affordable- Easy to adopt and install and has high domestic utility. Income generating- Not restricted to just large companies or governments to set up solar power plants. Individuals can also set up plants and can sell to distributing companies. Easy to transport- Minimum energy loss. Initiat...

The impact of science can be seen in all spheres of life such as: Healthcare- Antibiotics, gene therapy, vaccine, etc. Industries- Automation, Innovation, etc. Transportation. Communication. Food and lifestyle- ACs, heater, microwave, etc.  It is so deeply interwoven in material as well as intellectual aspects of human lives that today even self- discovery is technologically outsourced. Its impact on agriculture in one such aspect. Changes in Agriculture due to science-based technologies: Precision Agriculture: Use of drones, data analysis Remote-sensing. Genetically-Modified crops: Increased productivity and resilience. Green Revolution: Use of hybrid seeds, threshers, cultivators, seeders, mechanization. Water Management: Drip irrigation, cloud-automated and timed sprinkler systems and subsurface water lines. Smart Agriculture: Using data science, IoTs, robotics to analyze soil, seed quality, predicting crop yields, etc. Nanotechnology based Agriculture: Nanosensors in crop prote...

The S-400 Triumf is a mobile, surface-to-air missile system (SAM) designed by Russia. It is the most dangerous operationally deployed modern long-range SAM (MLR SAM) in the world, considered much ahead of the US-developed Terminal High Altitude Area Defence system (THAAD) and Patriot PAC-3.  Comparative Analysis of S-400 with other advanced defence system:  S-400 Triumf (Russia) Capable of firing any aerial target within a range of 400km. It has an ability to simultaneously track upto 160 objects in 600 km. It can intercept and shoot the moving targets with a maximum speed of 17km/hr. It can be assembled and deployed within five minutes. It is economical as it costs approximately only $500 million.  Patriot PAC-3 (The Phased Array Tracking to Intercept of Target (PATRIOT) Advanced Capability- Three) USA Ability to intercept aerial targets at a range of 180 km and of launching ballistic missiles upto a range of 100 km. It can track only 36 objects simultaneously. Whereas, ...

In 2014, Nobel Prize in Physics was awarded for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources. LED invention has tremendous impact on the everyday life of human being due to following features it has:  Characteristic Features Energy Efficiency - 60-70 percent improvement in energy use with respect to regular bulbs. Longer life span- Lasts 50,000hours to 100000hours. Ability to operate in cold conditions - Perform better in cold temperatures by about 5%. Cost effectiveness.  Impact on everyday life Seen in most of the organizations- Schools, workplace, institutions, hospitals, etc. Becoming the first choice of everyone, especially in Parking lots, outdoor signage, perimeter of buildings, which needs t ofunctionals 24*7. Used in freezer, meat lockers, cold storage spaces and refrigerated display. Resulted in financial savings and improved standard of living. Other impacts of LED in daily lives Environment-fri...

Current Affairs  Important Newspaper Highlights for UPSC Civil Services Examination. 06 August 2022 The HINDU   🟠  (Page 1) : RBI raises rates, vows nimble policy 🟢 (Page 1) : China sanctions Pelosi, suspended key U.S. talks 🟠 (Page 1) : India witnessing death of democracy: Rahul  🟢 (Page 1) : SC moots verdict for 'bodily autonomy'  🟠 (Page 3) : HC questions need for ration card to avail aid  🟢 (Page 6) : Lesson for India from the Taiwan standoff 🟠 (Page 6) : Addressing the challenges in new-age digital commerce  🟢 (Page 6) : Sticking to commitments 🟠 (Page 6) : A fresh opportunity  🟢 (Page 8) : Bill To punish 'religious animosity' mooted in LS 🟠 (Page 8) : Two new Bills introduced in the Lok Sabha  🟢 (Page 8) : India on track to meet clean energy targets  🟠 (Page 8) : 'Swaraj' is not limited to just self-rule, says Home Minister  🟢 (Page 9) : India, China hole dialogue on airspace violation near LAC  🟠 (Page 9)...