पक्षियों की दुनिया इंसानों से कहीं ज्यादा रंगीन [Birds See a More Colourful World Than Humans]



वैज्ञानिकों का मानना है कि पक्षी दुनिया को इंसानों से अलग तरीके से देखते हैं. जहां इंसानी आंखें केवल तीन प्रकार की रंग-संवेदी कोशिकाओं पर निर्भर करती हैं, वहीं पक्षियों की आंखों में चार प्रकार के कोन होते हैं, जिनमें अल्ट्रावायलेट प्रकाश को पहचानने की क्षमता भी शामिल है. यही वजह है कि जो चीज हमें साधारण सफेद दिखाई देती है, वह पक्षियों को जटिल रंगीन पैटर्न के रूप में दिख सकती है.
Scientists believe birds perceive colours differently from humans. While human eyes rely on three types of cone cells, birds possess four types, including one sensitive to ultraviolet light. As a result, objects that appear plain white to humans may display complex colour patterns to birds.
#dwsciencewithvivek

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15 Comments

  1. यही कारण है वो पक्षियां पृथ्वी के चुम्बकीय क्षेत्र को महसूस करता है

  2. इंसान तो कलर देखकर अमीरी गरीबी शादी ब्याह मौत मस्जिद मंदिर धर्म जाति राज्य देश खाना पीना नदी नाले भी पहचानता है😂

  3. ❤Dw के एंकर को देख और सुन कर ही महसूस होता है के उनकी बौद्धिकता का स्तर काफी अच्छा है वो जिस मुद्दे पर बोलते हैं दिखाते हैं उनका उन्हें अच्छा ज्ञान होता है न के हमारे मेन मीडिया के रट्टू, ध्याड़ी पकाने वाले पत्तलकारों जैसा,, जिनकी तरफ से देश और मुद्दों से ज्यादा सिर्फ पैसा कमाना है चाहे देस गर्त और अंधकार में ही चला जाए 😢

  4. This is Ranjitsinhji, the man after whom the Ranji Trophy is named on, in full glory after hitting a shot. Look at his bat, it is as thin as a wooden plank. It wouldn’t be that heavy too, a 12-year-old would be able to use it.

    

    This is Sachin Tendulkar in a practice session. Look at his bat. It wouldn’t weigh a ton, but around 1.5 kg. Sachin has the record of using the heaviest bat in international cricket.

    

    The difference in the size and weight of these bats points out how cricket has evolved into a batsman dominant game.

    Four decades ago, you needed brilliant batting skills to hit a six. You look at videos of Viv Richards hammering bowlers for sixes, there’s a brilliant use of footwork and timing. You look at Andre Russell doing the same now, it is just pure raw strength.

    Two decades ago, Sachin had to wait for a match against Australia to notice how Brett Lee would bowl. He had limited data in hand, he had to request BCCI for video clippings of Brett Lee that BCCI had with it to analyze.

    He’d sit around with a bunch of batsmen and bowlers to analyze everything from the run-up to the release of Brett Lee. This was a long, painful and tedious process.

    Now, you walk to your nearest Smaaash (not sure how many a’s) and ask for a bowling simulator. You can select bowling styles of players like Brett Lee, Dale Steyn and Muralitharan and bat against the machine.

    

    A simple search on YouTube gets bowling videos of every bowler in the world. Data Analysts analyze the game for you and make your job easy.

    The pitches and conditions are tailored for the batsmen.

    The boundaries sizes have been reduced for reasons I don’t know.

    The pitches are being made dry and flat so that we can see more runs in the match. I don’t think a majority of today’s batsmen can score at the same rates on green pitches.

    And today’s bowlers don’t have that deadly pace or supreme spin like yester-year bowlers.

    It is hard to be a bowler in today’s cricket.

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