Space-Time: The Biggest Problem in Physics
19:42
YouTubeQuanta Magazine
Space-Time: The Biggest Problem in Physics
What is the deepest level of reality? In this Quanta explainer, Vijay Balasubramanian, a physicist at the University of Pennsylvania, takes us on a journey through space-time to investigate what it’s made of, why it’s failing us, and where physics can go next. Explore black holes, holograms, “alien algebra,” and more space-time geometry ...
已浏览 101万 次2024年9月25日
Timer for Kids Activities
30-Minute Timer: A Fun and Effective Tool for Kids
30:32
30-Minute Timer: A Fun and Effective Tool for Kids
YouTubeDezainpa
已浏览 1.1万 次2024年7月17日
10 Minute Timer for Kids
10:08
10 Minute Timer for Kids
YouTubeHomeschool Pop
已浏览 112.5万 次2019年5月16日
5-Minute Clean Up Timer Song for Kids | Fun Countdown for Classrooms & Home
5:20
5-Minute Clean Up Timer Song for Kids | Fun Countdown for Classrooms & Home
YouTubeFirstStepReading
已浏览 36万 次2024年10月21日
热门视频
Pioneer DJ XDJ-XZ | Walkthrough and Tutorial
13:53
Pioneer DJ XDJ-XZ | Walkthrough and Tutorial
YouTubeSerato
已浏览 25.7万 次2020年3月10日
The STRONGEST Anime Characters of Each Anime!
3:04
The STRONGEST Anime Characters of Each Anime!
YouTubeAnimetopia
已浏览 1.6万 次2024年3月10日
Deriving the Capacitor Discharge Equations
4:10
Deriving the Capacitor Discharge Equations
YouTubeThe Brain Filler
已浏览 1.7万 次2021年6月2日
Timer Songs for Kids
5 Minute Countdown Timer with Music For Kids!
5:01
5 Minute Countdown Timer with Music For Kids!
YouTubeMr. Timer
已浏览 1061.1万 次2018年6月21日
Timer for Kids 10 Minutes! Timer with Music for Classroom, Children! Instrumental Music for Kids!
10:07
Timer for Kids 10 Minutes! Timer with Music for Classroom, Children! Instrumental Music for Kids!
YouTubeMr. Timer
已浏览 181万 次2018年10月22日
Timer for Kids 15 Minutes! Timer with Music for Classroom, Children! Instrumental Music for Kids!
15:07
Timer for Kids 15 Minutes! Timer with Music for Classroom, Children! Instrumental Music for Kids!
YouTubeMr. Timer
已浏览 211.1万 次2018年10月23日