rock-salt

The forests here extend hundreds of miles to the stunning opal rock-salt pools of Jiuzhaigou.

When a Billion Chinese Jump Jonathan Watts 2010

The forests here extend hundreds of miles to the stunning opal rock-salt pools of Jiuzhaigou.

When a Billion Chinese Jump Jonathan Watts 2010

The forests here extend hundreds of miles to the stunning opal rock-salt pools of Jiuzhaigou.

When a Billion Chinese Jump Jonathan Watts 2010

From what we know about the distribution of energy in the spectrum of the radiation emitted by a body at 55 o, it is clear that the rock-salt plate is capable of transmitting practically all of it, while the glass plate stops it entirely.

Eli Rabett and RW Wood EliRabett 2009

If convection heats up the glass to the temperature of the black cardboard, then the glass emits as much IR as the black cardboard, and from an IR transfer point of view, it has as much effect as the rock-salt.

Eli Rabett and RW Wood EliRabett 2009

Thus, the Muntanya de Sal rock-salt mines, beginning operations about 4000 BC, precisely compliment this picture.

Prozac Nation, 4000 B.C. 2009

Muntanya de Sal is the earliest-known rock-salt mine in Europe, and a lasting testament to the ancient hunger for salt.

Prozac Nation, 4000 B.C. 2009

So without the glass, or with a rock-salt cover instead of glass, the net radiation upwards is F.

Eli Rabett and RW Wood EliRabett 2009

To test the matter I constructed two enclosures of dead black cardboard, one covered with a glass plate, the other with a plate of rock-salt of equal thickness.

Archive 2009-12-01 EliRabett 2009

From what we know about the distribution of energy in the spectrum of the radiation emitted by a body at 55 o, it is clear that the rock-salt plate is capable of transmitting practically all of it, while the glass plate stops it entirely.

Archive 2009-12-01 EliRabett 2009