One of the most important topics taught at the start of introductory physics is the idea of vectors. Students really need proficiency with them if they are to use force and momentum. Just about ...

Just as a word arises from the alignment of vectors in latent space, a particle might arise from the alignment of string vibrations in geometric space. Meaning and mass—two forms of reduction ...

Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string theory,' a new preprint suggests. The model aligns closely with recent dark ...

It could be that Buhler, or another, will find normal physics is behind the apparent propellent-less thrust. For now, we would caution not to get your hopes up space high. ORIGINALLY PUBLISHED ...

Quaternions and vectors Hamilton called his 4D numbers "quaternions", and he used them to calculate geometrical rotations in 3D space. This is the kind of rotation used today to move a robot, say ...