Test of many-electron QED effects in the hyperfine splitting of heavy high-Z ions

Testing cosmological variability of fundamental constants

Testing Gravity with Muonium

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