×

UPSC Courses

DNA banner

DAILY NEWS ANALYSIS

  • 24 January, 2021

  • 6 Min Read

How do butterflies fly with such small bodies and large wings?

How do butterflies fly with such small bodies and large wings?

  • Unlike any other flying animal, butterflies have unusually short, broad and large wings relative to their body size.
  • By studying the aerodynamics of butterflies in a wind tunnel, researchers have now answered this question which has confused lepidopterologists (who study moths and butterflies) for years.
  • The results suggested that butterflies use a clap technique which helps them take off rapidly. “When the wings clap together, the air between the wings is pressed out, creating a jet, pushing the animal in the opposite direction,” explains the paper published on Wednesday in the Journal of the Royal Society Interface.
  • The flexible butterfly wings form a cupped shape during the upstroke and a clap that thrusts the butterfly forwards, while the downstroke is used for weight support.
  • Though butterflies exhibit a fluttery flight, they also perform highly directed and sustained flights during migration and take-off. Butterflies need high force and control for fast take-off flights. The team kept six individuals of silver-washed fritillaries (Argynnis paphia) in a wind tunnel and studied the behaviour and aerodynamics.
  • Why should one study butterflies and their flight? The shape and flexibility of butterfly wings could inspire improved performance and flight technology in small drones.

Source: TH


What is Mission Indradhanush ?

Mission Indradhanush was launched in 2014 under the Ministry of Health and Family Welfare.  1. Between 2009 - 2013, only 1% coverage per year has increased. We have to make it to 5%. 2. Objectives of Mission Indradhanush: We have the aim of full coverage by 2020. Cover all those children who are either unvaccinated or are part

Mediation Bill 2021 - Detailed Overview

A Bill that could alter the Mediation landscape The background behind Mediation Bill:         In General, Disputes Became part and parcel of  Day-to-Day Life. Someone or the Other belonging to family or else not a part of the family would be fighting for something. These Disputes may be for Smaller or B

Military exercises of India

List of all Military Exercises of India 2021 Military Exercises of India with Neighbours Sampriti: India & Bangladesh Mitra Shakti: India & Sri Lanka Surya Kiran: India & Nepal Hand in Hand Exercise: India & China Ekuverin: India & Maldives Military Exercises of India with Other countries Maitree Exer

Consumer Protection Rules, 2021

Consumer Protection (Jurisdiction of the District Commission, the State Commission and the National Commission) Rules, 2021 1) Pecuniary Jurisdiction The Consumer Protection Act, 2019 The Consumer Protection Act, 2019 promulgates a three-tier quasi-judicial mechanism for redressal of consumer disputes namely district commissions, state

Swachh Bharat Mission (Urban) 2.0

The Swachh Bharat Mission - Urban (SBM-U), launched on 2nd October 2014 aims at making urban India free from open defecation and achieving 100% scientific management of municipal solid waste in 4,041 statutory towns in the country. The objectives of the mission are mentioned below: Elimination of open defecation Eradication of Manual S

Students Achievement

Search By Date

Newsletter Subscription
SMS Alerts