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I clearly stated in the second reference we are talking about "effective mass", not real mass. But the first reference seem to be the real "negative mass".

Anyhow, they both behave as in the theory, which is at least a good small step. And they both can be created with meta-materials.

[QUOTE="DROBNJAK, post: 268490, member: 8760"] I clearly stated in the second reference we are talking about "effective mass", not real mass. But the first reference seem to be the real "negative mass". Anyhow, they both behave as in the theory, which is at least a good small step. And they both can be created with meta-materials. [/QUOTE]

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