Reprint of the original, first published in 1876.

Reprint of the original, first published in 1863.

Reprint of the original, first published in 1883.

Reprint of the original, first published in 1886.

Reprint of the original, first published in 1892.

Reprint of the original, first published in 1889.

Reprint of the original, first published in 1863.

Reprint of the original, first published in 1883.

Reprint of the original, first published in 1892.

Reprint of the original, first published in 1866.

Reprint of the original, first published in 1866.

Reprint of the original, first published in 1876.

Reprint of the original, first published in 1880.

Reprint of the original, first published in 1880.

Reprint of the original, first published in 1886.

Reprint of the original, first published in 1889.

Niels Bohr, founding father of modern atomic physics and quantum theory, was as original a philos...

This work has been selected by scholars as being culturally important, and is part of the knowled...

This work has been selected by scholars as being culturally important, and is part of the knowled...

This work has been selected by scholars as being culturally important, and is part of the knowled...

This work has been selected by scholars as being culturally important, and is part of the knowled...

This work has been selected by scholars as being culturally important, and is part of the knowled...

This work has been selected by scholars as being culturally important, and is part of the knowled...