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WLC2日目
ソーチェン着脱競技
今井陽樹選手
#ECHO #エコー #世界伐木チャンピオンシップ #伐木チャンピオンシップ #WLC
@echo_japan
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PRTurn your volume UP for this one. 🔊
You’re listening to the physics of acoustics in one of the deepest cave shafts in the world. When he blows that air horn, he’s sending out high-intensity sound waves. Because sound travels at a constant speed of about 1,125 feet per second (343 m/s) in air, the delay you hear is the time it takes for the wave to hit the rock wall and bounce back—an echo. By timing that gap, you can calculate exactly how deep this shaft really is!
echo-based depth measurement using the physics of acoustics. 🔊
1. What happens when the air horn is blown
The horn produces high-intensity sound waves.
These waves travel through air at about 343 m/s (1,125 ft/s).
The sound moves downward through the cave shaft until it hits the rock wall or bottom.
2. The echo
When the sound hits the surface:
Part of the sound energy reflects back toward the source.
Your ears hear this reflected wave as an echo.
3. Why there is a delay
The delay you hear is because the sound must travel two distances:
From the horn down to the bottom
From the bottom back up to you
So the sound travels twice the depth of the shaft.
4. How depth is calculated
Scientists use this simple formula:
The division by 2 is important because the sound traveled down and back.
Example
If the echo returns after 4 seconds:
Distance traveled by sound
= � meters
Actual depth
= � meters
So the shaft would be about 686 m deep.
5. This method is used in many fields
The same principle is used in:
SONAR to measure ocean depth 🌊
Ultrasound imaging in medicine 🏥
Bat echolocation 🦇
Cave exploration and mining surveys
Cool fact
Some of the deepest cave shafts on Earth, like those in the Krubera Cave in Georgia, use similar acoustic methods when direct measurement is difficult.
✅ In short:
By timing the echo, you can calculate exactly how deep the cave shaft is using the physics of sound.
If you want, I can also explain why deep caves sometimes produce multiple echoes that sound like a “laser gun” effect in recordings. It’s a fascinating acoustic phenomenon. 🔊
#kruberacave #acoustics #echo #physics #explorepage
@priyadharshini_ece
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JIFollow: @jitujjjjj
You’re hearing the physics of acoustics inside one of the deepest cave shafts in the world.
When the air horn is blown, it sends powerful sound waves through the shaft. Sound travels through air at about 1,125 feet per second (343 m/s).
The delay you hear is the time it takes for the sound wave to travel down the shaft, hit the rock wall, and bounce back as an echo.
By measuring that time gap, scientists can estimate the exact depth of the cave shaft.
#physics #acoustics #sciencefacts #echo #nature explained
@jitujjjjj
1.8M
ECDay2 of WLC
Fitting Chain Competition
Featuring Hinoki Imai
#WLC #worldloggingchampionship #echotools #ECHO #chainsaw
@echotools
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JUHuman finger under the microscope 🔬
__
#bacteria #microscope #science #vinegareels #fyp #foryou #foryoupage #microscopy #microscopic #biology #viral #xyzbca #echo #echorebel #slay #tucop2026slays #tuccop2026slays
@justice.dodson
49.2K
GRLove echo equipment. It last so long! One weed wacker going strong for 6 years. How long does your equipment usually last?
#grassgirl #ladiesoflawncare #pittsburgh #echo #echoforthewin
@grassgirllawncare
67.1K
XI假期最后一天当然要上街当女战士了
#riehata编舞 #ECHO #Hoshi #dancechallenge #reels
@xiaoyu_dancer
260.0K
TA振付師さんと踊ってみた
@shoyadivao さんありがとうございました！
#福本大晴 #angelwing #ECHO
@taisei_f_staff
50.3K
THJin's Solo EP "Echo" Hits 1.2 Billion Streams on Spotify
The EP debuted at No. 3 on Billboard 200. Lead track "Don't Say You Love Me" became the most-streamed K-pop solo single on the platform last year, generating 1 billion streams in seven months. The single hit No. 13 on Hot 100 and No. 10 on UK Official Singles Chart.
BTS also released "Keep Swimming," a remix album featuring each member's take on "Swim." Jin contributed an alternative rock version.
Read more in the link in bio.
#BTS #Jin #Echo #Arirang #KeepSwimming #Spotify #Billboard #Kpop #Bangtan
@theasiareview_
239.1K
KAChapter 2 💌 Sesame Seed
We were lucky to hear our little one at 5 weeks 🌱🥹 And you?
#first #echo #baby #ultrasound #sesame seed
@katinkakempeneers
108.3K
ON11–15 weken echo 🤍
Elke keer weer kippenvel…
dit blijft zo bijzonder voor ons ✨
Volgende week weten we het geslacht 🩵💗 Wat denken jullie??
#draagmoederschap #zwanger #echo #ultrasound #ivfjourney
@onzewensreis
114.8K
SIZa każdym razem to samo XD #echo #newmusic #siostrykafar
@siostrykafar
✨ #Echo Discovery Guide
Instagram hosts 7.6 million posts under #Echo, creating one of the platform's most vibrant visual ecosystems. This massive collection represents trending moments, creative expressions, and global conversations happening right now.
#Echo is one of the most engaging trends on Instagram right now. With over 7.6 million posts in this category, creators like @echo_japan, @echotools and @jitujjjjj are leading the way with their viral content. Browse these popular videos anonymously on Pictame.
What's trending in #Echo? The most watched Reels videos and viral content are featured above. Explore the gallery to discover creative storytelling, popular moments, and content that's capturing millions of views worldwide.
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📈 Hashtag Strategy: Explore trending hashtag options for your content
🌟 Featured Creators: @echo_japan, @echotools, @jitujjjjj and others leading the community
FAQs About #Echo
With Pictame, you can browse all #Echo reels and videos without logging into Instagram. No account required and your activity remains private.
Content Performance Insights
Analysis of 12 reels
💡 Top performing posts average 1.6M views (2.6x above average). Moderate competition - consistent posting builds momentum.
Post consistently 3-5 times/week at times when your audience is most active
Content Creation Tips & Strategy
💡 Top performing content gets over 10K views - focus on engaging first 3 seconds
📹 High-quality vertical videos (9:16) perform best for #Echo - use good lighting and clear audio
✍️ Detailed captions with story work well - average caption length is 359 characters
✨ Many verified creators are active (25%) - study their content style for inspiration
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