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DTSTART:20260329T020000Z
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SUMMARY:Earth Day Challenge: Measure a Tree!
DTSTAMP:20260418T173350Z
SEQUENCE:0
UID:720-5-c3fe8195a3dde498d013e477e2142422@aalbc.com
ORGANIZER;CN="richardmurray":noreply@aalbc.com
DESCRIPTION:URLhttps://www.deviantart.com/hddeviant/journal/Earth-Day-Ch
	allenge-Measure-a-Tree-1321823849EXAMPLE https://aalbc.com/tc/events/event
	/719-simple-inclinometer-02/CONTENT✂️ Build Your ClinometerYou’ll ne
	ed: cardboard\, protractor\, ruler\, pencil\, string\, tape\, small weight
	 (like a coin).\nQuick steps:\nTrace your protractor onto cardboardMark a 
	few angles (0°\, 45°\, 90° is enough!)Cut it out and poke a hole at the
	 centerTie string through the hole and attach a coin\n✅ When you hold it
	 up\, the string should hang straight down\nEXAMPLE WITH ADDED INSTRUCTION
	S PLUS PHOTOGRAPHIC AIDS\n🌳 Measure Your TreeStand back and measure you
	r distance from the treeMeasure your eye height (ground → your eyes)Find
	 your angleHold the clinometer at eye levelLook at the top of the treeRead
	 the angle where the string points🧮 Quick &amp\; Easy MathStep-by-step:
	Subtract your measured angle from 90°Example: 90 − 35° = 55°Find the 
	tangent (tan) of that number on a calculatorExample: tan(55°) ≈ 1.43Mul
	tiply by your distance from the treeExample: 1.43 × 10 m = 14.3 mAdd your
	 eye heightExample: 14.3 + 1.6 = 15.9 m✅ That’s your tree’s heigh
	t!📸 How to EnterSubmit a multi-image deviation with:Your clinometerThe 
	tree you measuredComment your entry below 👇\nNo AI-generated images\
	n📅 DeadlineMay 15th\, 2026\nWinners announced May 20th\n🏆 Prizes🥇
	 1000 points + Hype badge\n🥈 750 points\n🥉 500 points📌 RulesFollo
	w all group + DeviantArt rulesMust be a member of @CRArtisanCrafts to winA
	dmin decisions are finalThank you to @moonbeam13 for her help in managing 
	this challenge.
DTSTART;VALUE=DATE:20260414
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