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English Class 7 Maharashtra Board | Menu
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English Summary Chapter 2.6 “Great scientists have a questioning mind” Class 7 Maharashtra Board

Summary For All Chapters – English Class 7

Summary in English


Dr. A. P. J. Abdul Kalam, the former President of India, admired great scientists like Dr. C. V. Raman. Raman was born in Tiruchirapalli, India, in 1888. He was a brilliant student interested in science, especially in optics (the study of light) and acoustics (the study of sound). His curiosity made him ask many questions about the world around him.

One day, while traveling by ship, he wondered why the sea and sky are blue. He conducted experiments and discovered that light scatters due to water molecules. This discovery, called the Raman Effect, won him the Nobel Prize for Physics in 1930, making him the first Asian to receive this honor. February 28, the day he announced the Raman Effect, is celebrated as National Science Day.

Raman believed that science requires independent thinking and hard work, not just expensive equipment. His experiments used tools that cost only 200 rupees, proving that creativity and curiosity are more important than resources.


Summary in Hindi


डॉ. ए. पी. जे. अब्दुल कलाम, जो भारत के पूर्व राष्ट्रपति थे, ने महान वैज्ञानिक डॉ. सी. वी. रमन की प्रशंसा की। डॉ. रमन का जन्म 1888 में तमिलनाडु के तिरुचिरापल्ली में हुआ था। वे शुरू से ही एक होनहार छात्र थे और प्रकाश (ऑप्टिक्स) और ध्वनि (एकॉस्टिक्स) में गहरी रुचि रखते थे। उनकी जिज्ञासा उन्हें हमेशा दुनिया के बारे में सवाल पूछने के लिए प्रेरित करती थी।

एक बार, जहाज में यात्रा करते समय, उन्होंने सोचा कि समुद्र और आकाश नीले क्यों होते हैं। उन्होंने प्रयोग किए और पाया कि पानी के अणुओं की वजह से प्रकाश बिखरता है। इस खोज को “रमन प्रभाव” कहा गया, और इसके लिए उन्हें 1930 में भौतिकी का नोबेल पुरस्कार मिला। यह सम्मान पाने वाले वे पहले एशियाई थे। उनकी इस खोज के दिन, 28 फरवरी, को राष्ट्रीय विज्ञान दिवस के रूप में मनाया जाता है।

रमन का मानना था कि विज्ञान में स्वतंत्र सोच और मेहनत की जरूरत होती है, न कि महंगे उपकरणों की। उन्होंने केवल 200 रुपये के साधारण उपकरणों से अपने प्रयोग किए, जिससे यह साबित हुआ कि रचनात्मकता और जिज्ञासा ही असली ताकत हैं।

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