UPSC CURRENT AFFAIRS

A hydrogen fuel cell is a device that generates electricity through a chemical reaction between hydrogen and oxygen, with water as the only by-product. 

Zinc-air batteries are a type of metal-air battery that uses zinc (Zn) as the anode and atmospheric oxygen (O₂) as the cathode. 

Tribo-Electric Nanogenerators (TENGs) are innovative devices that harness mechanical energy (such as motion or vibration) and convert it into electrical energy using the triboelectric effect. 

Directed Energy Weapons (DEWs) are advanced systems that use concentrated electromagnetic energy or particle beams to disable, destroy, or damage enemy equipment and facilities.

The Integrated Guided Missile Development Program (IGMDP) was launched by India in 1983 with the aim of making the country self-sufficient in the field of missile technology. 

BMD systems are designed to protect against aerial threats, such as drones, fighter jets, and ballistic and cruise missiles, by launching interceptors to neutralize these threats. 

A Sodium-Ion Battery (Na-ion) is a type of rechargeable battery that uses sodium ions (Na⁺) as the charge carriers, instead of the lithium ions used in traditional Lithium-Ion Batteries (Li-ion). 

A Thorium Molten Salt Reactor (TMSR) is a type of nuclear reactor that uses thorium as fuel instead of uranium.

SMRs are compact, safe, and flexible nuclear reactors designed to generate up to 300 MW(e) of power per unit, much smaller than traditional reactors (700 MW(e) or more). 

Battery Energy Storage System (BESS) is a type of electrochemical energy storage system (ESS) that uses various electrochemical reactions to store electrical energy for later use.