Ionization energy of the helium atom in a plasma

Ionization of Na atoms by 8-GHz electric fields

Ionization rate coefficients of multiply ionized atoms

Iron forbidden lines in tokamak discharges

Irregularly Shaped Satellites-Phobos & Deimos- moons of Mars, and their evolutionary history

Irreversibility and Measurement in Quantum Mechanics

Is 'superstatistics' really 'super'?

Is a non-vanishing cosmological constant really needed?

Is a recently proposed experiment to demonstrate quantum behavior for optically levitated nanospheres feasible?

Is Brain in a Superfluid State? Physics of Consciousness

Is dark matter an illusion created by the gravitational polarization of the quantum vacuum?

Is Detection of Fitzgerald-Lorentz Contraction Possible?

Is Electron an Anyon with Spin-1/2?

Is formal QED mathematically consistent?

Is Gravity an Entropic Force?

Is Gravity an Interaction?

Is Hubble's Expansion due to Dark Energy

Is it Possible to Describe Economical Phenomena by Methods of Statistical Physics of Open Systems?

Is nature OO?

Is OPERA Neutrino Superluminal Propagation similar to Gain-Assisted Superluminal Light Propagation