- BSNL launched India’s first Direct-to-Device(D2D) Satellite connectivity
- It marks a major event in extending satellite communications to everyday consumers which were earlier limited to emergency and military use.
Working of Direct-to-Device Satellite Technology
- Principle: Satellites act as cell towers in space, bypassing the need for terrestrial cell towers as used in traditional mobile connectivity.
- It uses satellites in orbit to transmit signals directly to devices on the ground.
- Non-Terrestrial Network (NTN) technology : It allows for seamless two-way communication between devices and satellites.
- BSNL uses Viasat’s Geostationary L-band satellites positioned 36,000 kilometers above which bypasses round-based cell towers, making it ideal for remote coverage.
FIRST INDIGENOUS ANTIBIOTIC
Recently, Union Minister of Science and Technology launched the first indigenous antibiotic “Nafithromycin” for resistant infections.
About Antibiotics
- They are chemical substances (produced both synthetically and by some microbes) used as drugs to kill or stop the growth of disease-causing microorganisms.
- They have low toxicity for humans and animals and can be mixed with livestock feed to check microbial infections in animals.
- They work against bacterial and not viral infections (like common cold, flue).
- Viruses lack a cell wall that is attacked by antibiotics.
- Common Examples: Streptomycin, tetracycline and erythromycin.