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BBC
7 小时
Wavelength, frequency and speed
Through comparing gossip travelling around a school to sound waves, Ada discusses the key factors of waves such as their speed, frequency, wavelength and the simple definition of a wave. Use a slinky ...
eng.obozrevatel
6 小时
Scientists have solved the mystery of the "alien" sounds in the deepest place on the planet ...
Scientists have finally succeeded in solving the mystery of "alien" sounds coming from the deepest part of the Pacific Ocean ...
Fiverr
6 小时
Video Editing
Create or improve your videos with video editing and post-production services.
5 小时
Niche startups selling small-ticket home products win investor interest
Over the last few months, investors have backed about half a dozen home decor startups, such as Nestasia and Vaaree, selling ...
14 小时
'We’re coming after you': Sheriff tired of school shooting hoaxes has message for students
Sheriff Chitwood is turning heads for his approach of putting students’ — and their parents’ — names, mugshots and “perp walk ...
ecr.co.za
9 小时
The Ofori's delighted in the KZN snow this weekend
Carol Ofori and her family shared the excitement and glory like many other families in KZN as they visited Howick to see the snow.
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