Final answer:
The Algernon-Gordon Effect is not a recognized scientific concept; instead, the question likely refers to concepts from Einstein's theory of relativity. This includes the equivalence principle and the bending of light by mass, principles which have been experimentally confirmed.
Step-by-step explanation:
The Algernon-Gordon Effect does not directly refer to a specific scientific principle or effect. The information provided seems to confuse concepts from Einstein's theory of special and general relativity with concepts that aren't formally recognized as the Algernon-Gordon Effect in scientific literature. However, the principles of relativity can be used to clarify the concepts at hand. Einstein's thought experiments, or Gedankenexperimente, demonstrate that outcomes that seem obvious may need to be altered to align with the postulates of relativity.
Einstein's theory of general relativity suggests that the presence of mass warps the space-time fabric, and massive objects can significantly bend light. This can be illustrated through an elevator experiment, where your apparent weight changes due to acceleration, demonstrating the equivalence principle: the indistinguishability between acceleration and gravitational effects. Such principles have been confirmed through numerous experiments, validating Einstein's theories.