English
全部
AI 模式
图片
视频
短视频
地图
资讯
更多
购物
航班
笔记本
报告不当内容
请选择下列任一选项。
无关
低俗内容
成人
儿童性侵犯
Free
Science Lesson
Acting
Lessons Online
English
Lessons Online
Cheerleading
Lessons Online
Cooking
Lessons Online
Archery
Lessons Online
Dance
Lessons Online
Ballet
Lessons Online
Algebra
Lessons Online
Earth Science
Video Lessons
Online
Class Science
Free Science Lessons
GCSE Biology
Free Science Lessons
Chemistry GCSE
Free Science Lessons
Food Tests
Science Lessons
Science
Interactive Sign Up
Free Science Lessons
Ionic Compounds
Free Science Lessons
Element Blocks
Online Science
Tutorial YouTube
Free Science Lessons
Ionic Bonding
Elementary Math
Lessons Online
6th Grade Math
Lessons Online
Online
Classes for Free for Adults
4th Grade
Science Lesson Free
Since
Kieran Crowley Quotient Sciences Webinar
Science
Book
Computer
Lessons
Chemistry Freshman Course
Science
Videos
时长
全部
短(小于 5 分钟)
中(5-20 分钟)
长(大于 20 分钟)
日期
全部
过去 24 小时
过去一周
过去一个月
去年
清晰度
全部
低于 360p
360p 或更高
480p 或更高
720p 或更高
1080p 或更高
源
全部
Dailymotion
Vimeo
Metacafe
Hulu
VEVO
Myspace
MTV
CBS
Fox
CNN
MSN
价格
全部
免费
付费
清除筛选条件
安全搜索:
中等
严格
中等(默认)
关闭
筛选器
Free
Science Lesson
Acting
Lessons Online
English
Lessons Online
Cheerleading
Lessons Online
Cooking
Lessons Online
Archery
Lessons Online
Dance
Lessons Online
Ballet
Lessons Online
Algebra
Lessons Online
Earth Science
Video Lessons
Online
Class Science
Free Science Lessons
GCSE Biology
Free Science Lessons
Chemistry GCSE
Free Science Lessons
Food Tests
Science Lessons
Science
Interactive Sign Up
Free Science Lessons
Ionic Compounds
Free Science Lessons
Element Blocks
Online Science
Tutorial YouTube
Free Science Lessons
Ionic Bonding
Elementary Math
Lessons Online
6th Grade Math
Lessons Online
Online
Classes for Free for Adults
4th Grade
Science Lesson Free
Since
Kieran Crowley Quotient Sciences Webinar
Science
Book
Computer
Lessons
Chemistry Freshman Course
Science
Videos
Science
Classes for 24 Houre
Ng
Science
Chemistry
Lesson
Ngscience
Science
Buddies
Science
for Kids
Khan Academy
Science
Chemistry
Science
Videos for Kids
Videos for Middle School Earth
Science
Science
Channel YouTube for Kids
New Studies
Science Curriculum
Chemistry Basic
Quotient Sciences
Webinar
Chemistry Tutorials
Next Generation
Science
3rd Grade
Science
Science
Classes
What Is
Science
Science
Class
0:11
Notez bien la date du 15 novembre 2026. Ce jour-là, nous vivrons un moment historique : la sonde Voyager 1 sera à un jour-lumière de la Terre, soit près de 26 milliards de kilomètres ! Concrètement, cela signifie qu’un signal radio envoyé depuis la Terre mettra environ 24 heures à lui parvenir, et qu’il faudra encore 24 heures pour recevoir sa réponse. Autrement dit, chaque échange avec la sonde nécessitera près de deux jours. Lancée en 1977 par la NASA, Voyager 1 est l’objet fabriqué par l’être
已浏览 4.6万 次
1 周前
TikTok
astronophilos
1:11
What is edge dislocation?
已浏览 266.4万 次
2 周前
YouTube
Veritasium
1:59
GAS ஒழுங்கா எரியலைனா இத பண்ணுங்க 😊
已浏览 147.7万 次
3 周前
YouTube
Engineering Facts
0:52
Making water boil without reaching boiling temperature
已浏览 130万 次
3 周前
TikTok
rowleyadventures
0:13
When the science experiment becomes a lesson in Newton’s laws. 🎳😭💀 Gravity remains undefeated. #RossSmith #FunnyFails #Physics #UnexpectedMoments #Viral
已浏览 350万 次
2 周前
TikTok
notworldsstrongestman
1:14
The Most Detailed Image Ever Taken of the Sun
已浏览 326.5万 次
3 周前
YouTube
Astrum
0:22
Was it casual? Protons and electrons are fundamental subatomic particles that determine the structure and behavior of an atom. The proton is a heavy, positively charged particle located deep inside the atom's central nucleus, and its total count defines the identity of the chemical element. In contrast, the electron is an incredibly light, negatively charged particle that rapidly orbits the nucleus in outer shells. While they have opposite charges, they have equal strength, meaning a balanced nu
已浏览 300万 次
3 周前
TikTok
sciencepro51
3:13
Menentukan keempat bilangan kuantum elektron terakhir #tka #belajarkimia #bilangankuantum #kimiaasyik #kimia
已浏览 130万 次
1 周前
TikTok
nunungtriyana90
1:56
Tour de Pise : Pourquoi elle ne tombe pas ? La solution ingénieuse 🏗️
已浏览 130万 次
2 周前
TikTok
alfred.explique
0:47
Ranking the Best Physics Moments Ever 🤯⚡🌍
已浏览 3万 次
1 周前
YouTube
Special Ranks
0:58
‼️Rythu inkeppudu bagupadtadu! | Episode - 83 | Pratibha Biotech Founder | E. Rajasekhar Reddy | VOM
已浏览 36.8万 次
3 周前
YouTube
VOM | Voice of Mogasala
1:26
Le truc le plus RARE de l'univers ?
已浏览 37.4万 次
3 周前
YouTube
Greg
1:20
What if you stood in the same spot until the end of the universe? One lookout, one rock, and the whole future: the towers fall and the forest takes the city, the mountains wear down, the brightening Sun boils the oceans, Andromeda crashes into our galaxy, the Sun swells into a red giant and swallows the Earth, then blows off its shell and leaves a white dwarf, the stars go out one by one, black holes roam the dark and then evaporate too. The years run from 0 to 10^100. The fate of the city and t
已浏览 44.9万 次
2 周前
TikTok
eye_level_pov
0:30
bagian 3| penjelasan: 1.pengertian eksperimen gunung berapi adalah eksperimen kimia yang mengilustrasikan gunung meletus 2. Proses eksperimen 1.Masukkan sedikit soda kue ke dalam gelas kimia. 2.Tambahkan air dan pewarna makanan biru muda. 3.Tuangkan cuka secara perlahan ke dalam gelas kimia. 4.Amati munculnya gelembung dan busa yang naik lalu meluap dari gelas. Lakukan percobaan di atas meja yang stabil dan jangan menutup gelas kimia karena gas akan terbentuk. 3. Reaksi kimia yang terjadi: NaHCO
已浏览 35.7万 次
1 周前
TikTok
laut4713
0:13
How the Neighborhood Starts Hailing You When You’re With Your Mum
已浏览 35.5万 次
1 周前
TikTok
josh.science
1:02
What If Electrons Disappeared for 5 Seconds?
已浏览 31.8万 次
2 周前
TikTok
whatif.sim
1:51
Ethan va-t-il survivre au soleil ? Explication scientifique
已浏览 21.8万 次
1 周前
TikTok
gr.zoom
1:03
These 'bikes' are a loophole | amazon bike truck
已浏览 18.1万 次
1 周前
TikTok
lectec.science
1:37
Una científica argentina creó una CURITA FUTURISTA para regenerar heridas 🩹🧬 🧫 Se llama Mikele Amondarain, es genetista, arrancó su proyecto en el CONICET y el Instituto Fleni, y hoy lo sigue desarrollando con su startup Vesicly. 🧬 El parche está cargado con exosomas, paquetitos con la información regenerativa de una célula madre pero sin usar la célula entera, lo que reduce mucho los efectos adversos. 🩹 Estas curitas ayudan a que la herida se recupere más rápido y mejor (como cuando somos
已浏览 20.3万 次
1 周前
TikTok
nickibeckerr
2:09
what's the single largest man-made structure on the face of the planet_ Our online store is OPEN! 🚀👕 Science, nerd culture, geeky designs & plenty of chaos. 🧠🔥 👉 Shop now: sciencebtch.etsy.com New designs every week, with more products coming soon! 🌌 Thanks for all your support! ❤️ Stay curious. Stay weird. 🚀 #ScienceBitch #ScienceFacts #AnimalFacts #DidYouKnow #FunFacts
已浏览 9.1万 次
2 周前
TikTok
science.b_tch
展开
更多类似内容
反馈