# Summary of #hplusroadmap IRC Log (March 3, 2015)

• A discussion occurred about the physical distinction between atmosphere and exosphere, with maaku noting there are multiple arbitrary definitions where Earth's atmosphere transitions to exosphere.

• Chris_99 shared a scientific literature resource (booksc.org) that might be useful for researchers in the channel.

• A paper on PEDOT-CNT coated electrodes was shared, discussing how these electrodes can stimulate retinal neurons at low voltage amplitudes and low charge densities, potentially relevant for neural interfaces.

• Kanzure and others discussed a theoretical "space fog" concept involving sterile metal rods with droplets maintained by surface tension and manipulated by lasers, with fenn pointing out practical challenges like humidity control and retrieval mechanisms.

• A discussion about Brillouin's equation took place, noting that changing an information bit value requires at least kT ln(2) energy, relating to fundamental thermodynamic limits of computation.

• Participants debated interpretations of the Second Law of Thermodynamics, particularly criticizing anthropomorphic concepts of "order" and discussing how natural selection might relate to entropy.

• A conversation about brain-computer interfaces included discussion of subvocalization EMG for detecting "inner voice" and the limitations of EEG for capturing neural activity, with kanzure expressing skepticism about traditional EEG research approaches.

• Nmz787 shared a Nature Communications paper about the simultaneous observation of quantization and interference patterns of plasmonic near-fields, demonstrating both wave and particle properties of light.