The human sensory range is a narrow slice of the physical world. For vision, humans detect only electromagnetic waves within approximately 430–790 terahertz, corresponding to the visible light spectrum of violet through red. Outside this range lie ultraviolet light, X-rays, gamma rays, infrared, microwaves, and radio waves—phenomena invisible to us but detectable with instruments. Similarly, human hearing is restricted to frequencies between about 20 hertz and 20 kilohertz, with sensitivity declining with age, particularly for higher frequencies.

🎉【Gate Singapore Flagship Event · Square Fun Quiz Challenge Day 1】
#TOKEN2049# is just around the corner, and Gate is bringing the heat to Singapore!
Token of Love Music Festival, Gate x Oracle Red Bull Racing Reception, and the F1 Race Viewing are all set to roll out!
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To join: Comment your answers (format: 1B 2A 3B 4C)
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📖 Day 1 · Quiz (Single Choic

💥 Gate Square Event: #SOMI Creative Contest# 💥
Post original content related to SOMI or CandyDrop #76 on Gate Square for a chance to share 180 SOMI rewards!
CandyDrop 76: CandyDrop x Somnia (SOMI)👉 https://www.gate.com/announcements/article/46912
📅 Event Period: Sep 8, 2025 – Sep 15, 2025
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Post original content related to SOMI or the CandyDrop event
Minimum 80 words
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Include CandyDrop participation screenshot
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🚗 #GateSquareCommunityChallenge# Round 1 — Who Will Be The First To The Moon?
Brain challenge, guess and win rewards!
5 lucky users with the correct answers will share $50 GT! 💰
Join:
1️⃣ Follow Gate_Square
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📅 Ends at 16:00, Sep 17 (UTC)