questions
-
Other Sciences
Work or play? The rise of online ‘kidfluencers’ raises complex legal and ethical questions
Credit: Pixabay/CC0 Public Domain Videos of children unboxing and playing with toys have become a hallmark of online marketing, making stars out of children as young as two years old. For example, 12-year-old influencer Ryan Kaji earns US$30 million a year on YouTube, where he leads one of the most popular children’s channels. His empire was built on unpacking toys.…
Read More » -
Space & Cosmos
Black hole research questions Kerr solution assumptions
Left: A concrete realization of the Meisner-Sharp mass of Eq. (18) and parameters 𝑀0=10, ℓ=1, 𝑣𝑖=−20, 𝑣𝑓=1000, 𝑠1=1, 𝑠2=1/40. The radius of the outgoing shell is initially set to 𝑅(𝑣=30)=5. Right: As an illustrative example, the Meisner-sharp mass in the interior region of the output shell 𝑀+(𝑣,𝑅(𝑣)) 𝑚(𝑣)=−𝛽(1+𝜀cos(𝜔𝑣 ) )/𝑣)/𝑣𝑝 is 𝛽=1, 𝜔=1, 𝑝=2, 𝜀=0 (green solid line) or 𝜀=1…
Read More »
