मैगज़्टर गोल्ड के साथ असीमित हो जाओ

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HOW PARACHUTES WORK

How It Works UK

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Issue 204

There's much more to this essential piece of flight safety equipment than a simple tug on a rip cord

- AILSA HARVEY

HOW PARACHUTES WORK

Whether they're being used for recreational skydiving, emergency escapes from aircraft or military supplies and troop deployment, parachutes are engineered to serve the same role: to safely lower people or objects from the skies to the ground. Parachutes work by counteracting the force of gravity pulling objects through the air to the ground by increasing air resistance. These apparatus consist of large, strong and light canopies that, when deployed, catch air as a skydiver falls to slow their descent. The faster the parachute is falling, the more drag it creates, which resists the downward movement and pushes the parachute up. As a result, the person attached to the parachute can gently float the remaining distance that separates their feet from the earth.

Without a parachute, a free-falling person will gain speed as they move towards the ground by around ten metres per second. After around 12 seconds, this speed steadies and remains consistent. This is called terminal velocity. Skydivers generally deploy their parachutes between 900 and 1,500 metres from the ground. As a result, using a parachute reduces a person's terminal velocity by 90 per cent, transporting them to the ground in a controlled way that means they can land safely on their feet.

How It Works UK से और कहानियाँ

How It Works UK

How It Works UK

UNCANNY'S DANNY ROBINS

The creator and host of the BBC's Uncanny series tells us about his most chilling experiences while researching the show, and writing a ghost book for children

time to read

4 mins

Issue 208

How It Works UK

How It Works UK

HOW FEATHERS GROW

A bird's proteinaceous plumage comes from the same source as our hair

time to read

1 mins

Issue 208

How It Works UK

How It Works UK

New EV battery technology could power 500-mile road trips on a 12-minute charge

Scientists have used a neat chemistry trick to tackle a major challenge facing future batteries.

time to read

2 mins

Issue 208

How It Works UK

How It Works UK

HOW AIR PURIFIERS WORK

These filtration devices clean a room's air of particles that can make a person sick

time to read

1 min

Issue 208

How It Works UK

How It Works UK

Chinese scientists hunt for alien radio signals in a 'potentially habitable' star system

TRAPPIST-1 is a red dwarf star located about 40 light years away that hosts seven Earth-sized rocky planets, with at least three orbiting in the habitable zone where liquid water could exist.

time to read

2 mins

Issue 208

How It Works UK

How It Works UK

WHAT HAPPENS WHEN WE DIE?

Our bodies are vessels for life, but in death they undergo a cascade of chemical and biological changes

time to read

3 mins

Issue 208

How It Works UK

How It Works UK

WHY ARE KEYBOARDS QWERTY?

There's a reason why this seemingly random arrangement of letters is widely used on keyboard layouts

time to read

1 min

Issue 208

How It Works UK

How It Works UK

A 'quasi-moon' discovered in Earth orbit may have been hiding for decades

A new paper describes a possible 'quasi-moon' of Earth, an interloping asteroid that may have been following our planet around for decades, undetected.

time to read

1 mins

Issue 208

How It Works UK

How It Works UK

WHAT'S AN ANTI-DRONE GUN?

How these devices intercept and disable unmanned aerial vehicles

time to read

1 mins

Issue 208

How It Works UK

How It Works UK

Dozens of mysterious blobs discovered inside Mars may be 'failed planets'

Giant impact structures, including the potential remains of ancient ‘protoplanets’, may be lurking deep beneath the surface of Mars.

time to read

2 mins

Issue 208

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