VSauce: How Much Does a Shadow Weigh?
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Weight is the term scientists use to describe how much force due to gravity acts on an object.
Oct 7, 2012 5:18 PM
Re: VSauce: How Much Does a Shadow Weigh?
Solar sails are propelled mostly by protons, not photons.
Also, a one light-year long board would take 900000 years to propagate sound all the way to the other end only if that board is made of air at room temperature. If it's made of pine at 4 Kelvin, it would only take about 130000 years.
Also, a one light-year long board would take 900000 years to propagate sound all the way to the other end only if that board is made of air at room temperature. If it's made of pine at 4 Kelvin, it would only take about 130000 years.
Re: VSauce: How Much Does a Shadow Weigh?
okay, what if the board is attached to the button and you pull it...Is there a difference?
By: wildancrazy159
