Unit 5: Science and Curiosity – Class 8 English Chapter 5 Notes & NCERT PDF

Unit Overview

Unit 5, Science and Curiosity, shows how curiosity drives discovery — whether it is a canary floating in a space station, a child peering through a magnifying glass, or a young woman chasing cosmic rays when few women were allowed into science. The unit has three pieces:

Feathered Friend (Arthur C. Clarke)

Type: Science-fiction short story, told in the first person by a crew member of a space station.

What happens (Part I): The narrator says no rule ever forbade pets in a space station — and even if one had, Sven Olsen would have ignored it. Sven is a wiry construction man who fits girders together in free fall, "the slow-motion, three-dimensional ballet". One day the narrator hears a musical whistle beside his ear, thinks it came over the intercom, looks up with a start and bumps his head on an angle beam. He then sees Claribel, a small yellow canary, hanging motionless in the air. Sven had smuggled her up on the last ferry from Earth, "partly, he claimed, out of sheer scientific curiosity" — to see how a bird would fly with no weight. Claribel becomes everyone's pet, and the crew hide her from visiting VIPs.

What happens (Part II): One 'morning' the narrator wakes with a nagging headache and feels sluggish. Sven finds Claribel lying still, "a tiny bundle of yellow feathers". Jock Duncan, the cook-doctor-dietitian, cannot hear a heartbeat. Someone suggests oxygen from the green-banded emergency cylinder; Claribel revives, sings her "Come to the cookhouse, boys" trills — then keels over again. Suddenly the narrator remembers:

"I've just remembered that miners used to carry canaries down to warn them of gas."

Jim, the duty engineer, says the alarms would have gone off because they have duplicate circuits — but his assistant reminds him the second alarm circuit isn't connected up yet. Jim checks and returns "with a sheepish expression": during a rare eclipse by Earth's shadow, part of the air purifier had frozen up, and the single alarm failed. "Without Claribel, we should soon have been slightly dead."

Message: Simple, living warning systems can protect us when expensive technology fails. Clarke mixes science with humour ("slightly dead", "passing the oxygen bottle around like a pipe of peace") and ends by saying a birdsong on a space station means you are "doubly safeguarded, at practically no extra expense".

Magnifying Glass (Walter de la Mare)

Type: Poem of six stanzas with four lines each (quatrains), rhyme scheme ABCB (talk/chalk, trees/bees, jets/spinnerets, flies/eyes, glass/surpass, moon/afternoon). Tone: wonder and curiosity.

Meaning: The speaker says the round glass lets him "make Magic talk". Through it:

A myriad shells show

In a scrap of chalk;

An inch of moss becomes "A forest—flowers and trees", and "A drop of water / Like hive of bees". He watches "the deft spider" jet "The woven web-silk / From his spinnerets" and notices its "tigerish claws". Nothing is so tiny that the glass cannot make it "more marvellous". The last stanza leaps from small things to the sky — with lenses like this, "Eyeing the moon, / 'Twould seem you'd walk there / In an afternoon!"

Poetic devices:

Message: Close observation turns the ordinary into the extraordinary; lenses extend our curiosity from a drop of water all the way to the moon.

Bibha Chowdhuri — The Beam of Light that Lit the Path for Women in Indian Science

Type: Biographical essay.

Key facts from the text:

Message: Persistence can break barriers; recognition may come late, but pioneers light the path for those who follow.

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