If it were populated at the same density as Manhattan, New York might be home to a million more people.
Some equipment for detecting explosives does so by measuring the density of objects, and chocolate, cheese and some other processed foods have the same density as some explosives.
And since carbon monoxide has about the same density as the surrounding air, it can easily seep into the house from the garage through even tiny cracks and openings.
After it has cooled and has reached the same density as the water below, the water column becomes isothermal (i.e., there is a uniform temperature at all depths).
And since ethane has roughly the same density as air, the fuel in effect weighs nothing, further reducing the amount of helium needed to create buoyancy.That is the theory, at least.
Furthermore, Hubble's estimates of star densities demonstrated that the stars in the outer arm areas of M31 are spread out with about the same density as in the Milky Way Galaxy system in the vicinity of the Sun.
More recently, a 2011 paper defined a Super Earth as a planet up to twice the Earth's radius which, if the planet were the same density as ours, would cap a Super Earth as eight times as massive as our planet.
"By 2409," Sanderson writes, "popular demand for sustainability will have reshaped the landscape to support its 12 million people, who will live in a necklace of unique and extraordinary cities on only 36percentt of the land (assuming the same density as modern day Manhattan), surrounded by farms, wildlands, and a restored and thriving estuary, with boundaries redrawn by climate change".
More recently, a 2011 paper defined a Super Earth as a planet up to twice the Earth's radius — which, if the planet were the same density as ours, would cap a Super Earth as eight times as massive as our planet.
The particles have the same density as the fluid.
A stationary submarine that's exactly the same density as water will neither float nor sink.
