How can candle wicks hold a flame for so long?

It’s the wax vapour rather than the solid or liquid wax that actually burns. | Photo Credit: Sixteen Miles Out/Unsplash Q: How can candle wicks hold a flame for so long? – Sadhika G. A: A candle wick holds a flame because it isn’t just a string that burns. Its main purpose is to deliver […]

Publish or perish: making sense of India’s research fraud epidemic

For representative purposes. | Photo Credit: Getty Images Research fraud is a global problem and has become worse due to the growing use of Artificial Intelligence (AI). The problem is even more acute in India’s higher education sector where both the number of journal publications and retractions are growing rapidly. However, journal retractions do not […]

RRC Northern Railway Apprentice recruitment 2025: Registration begins for 4,116 vacancies at rrcnr.org; direct link to apply here

rrc northern railway apprentice recruitment 2025 registration begins for 4116 vacancies at rrcnrorg

RRC Northern Railway Apprentice recruitment 2025: The Railway Recruitment Cell (RRC), Northern Railway, has begun the online registration process for one of its largest apprentice intakes for the 2025-26 cycle. Applications are now open for 4,116 Act Apprentice positions across major divisions under Notification No. RRC/NR/05/2025. Eligible candidates with matriculation and ITI qualifications can now […]

Science quiz: 110 years of general relativity

Karl schwarzschild.portrait

Science quiz: 110 years of general relativity Each exact solution of the mathematical relations of general relativity (Q1) has a name. Name this person, who solved the relations for what space looks like around a spherical and non-rotating black hole, while serving as a soldier in World War I. START THE QUIZ 1 / 6 […]

Delhi’s toxic air forces new rules: What office-goers and students must brace for now

delhi air pollution

Delhi’s air quality has slipped into the danger zone again, forcing the government and regulators to issue a series of immediate curbs across workplaces and educational institutions. The latest measures, drawn from advisories reported by AIR and directions issued by the Directorate of Education and the CAQM, are aimed at cutting exposure and reducing the […]

SSC extends last-chance self-slot window for JE 2025: Check details here

ssc je self selection registration deadline

SSC JE self selection registration deadline extended The Staff Selection Committee (SSC) has issued a notice related to providing a final opportunity to candidates who failed to use the self-slotted facility for the Junior Engineer (JE) Examination 2025. The Commission has announced that such candidates may now select their preferred examination city through the feedback […]

Tetrapod-shaped nanoparticles could make plastics easier to process, finds IIT study

An image of concrete tetrapods used as wave breakers to prevent beach erosion. | Photo Credit: Special Arrangement A collaborative study by researchers from three Indian Institutes of Technology (IITs) has found that adding tetrapod-shaped nanoparticles to certain synthetic plastics can significantly reduce their viscosity, making them easier and less energy-intensive to process. Plastics owe […]