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The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... As better experiments and theoretical calculations have come about, our understanding of the proton ... [+] has gotten more sophisticated, with gluons, sea quarks, and orbital interactions coming into play. However, the fundamental idea that there are three valence quarks of three different colors has remained a constant. ... "
" ... The particles and antiparticles of the Standard Model have now all been directly detected, with the... [+] last holdout, the Higgs Boson, falling at the LHC earlier this decade. Today, only the gluons and photons are massless; everything else has a non-zero rest mass. ... "
" ... There’s an important rule in relativity that — as far as we know — all objects must obey. If you have no rest mass as you travel through the vacuum of space, you absolutely are compelled to travel exactly at the speed of light. This is exactly true for all massless particles, like photons and gluons, approximately true for particles whose mass is tiny compared to their kinetic energy, like neutrinos, and should also be exactly true for gravitational waves. Even if gravity isn’t inherently quantum in nature, the speed of gravity should be exactly equal to the speed of light if our current laws of physics are correct. And yet, when we saw the first neutron star-neutron star merger in both gravitational waves and with light, the gravitational waves got here first by almost 2 seconds. What’s the explanation? That’s what Mario Blanco wants to know, asking: ... "