Testing isotropy of the universe using the Ramsey resonance technique on ultracold neutron spins

Testing Lorentz and CPT symmetry with hydrogen masers

Testing non-classical theories of electromagnetism with ion interferometry

Testing the distance-dependence of the van der Waals interaction between an atom and a surface through spectroscopy in a vapor nanocell

Testing the neutrality of matter by acoustic means in a spherical resonator

Testing the stability of fundamental constants with the 199Hg+ single-ion optical clock

Testing the time dependence of the fundamental constants in the spectra of multicharged ions

Tests for non-randomness in quantum jumps

The "0.4 eV" Shape Resonance of Electron Scattering from Mercury in a Franck-Hertz Tube

The $HeH^+$ molecular ion in a magnetic field

The $H_3^+$ molecular ion in a magnetic field in linear parallel configuration

The $α$-dependence of transition frequencies for ions Si II, Cr II, Fe II, Ni II, and Zn II

The 2S-2P Lamb Shift in He+

The 3 K blackbody radiation, Dirac's Large Numbers Hypothesis, and scale-covariant cosmology

The 87-Sr optical frequency standard at PTB

The Ability of Extreme Ultraviolet and Soft X-ray Imaging Telescopes to Constrain Coronal Differential Emission Measure

The absolute Frequency measurement of atomic thallium 6P1/2->7S1/2 transition using optical frequency comb

The absolute frequency of the 87Sr optical clock transition

The Ages and Masses of the Stars

The alpha-dependence of transition frequencies for some ions of Ti, Mn, Na, C, and O, and the search for variation of the fine structure constant