Welcome to the Physics discussion forum.
Although you can send messages directly to the Guide, using the forum will be more beneficial since the message reaches a greater number of people. As a result, a large number of people can contribute to or benefit from the discussions. Feel free to use this forum to ask questions, express your opinion, and spread relevant information among the community.
Andrew, the Physics Guide, will visit the forum regularly and will contribute to (and moderate) all discussions. Discussions in the forum should be kept on topic, to the extent possible, and remain civil and respectful. Please remember that blatant advertisements are not allowed, although you may refer users to relevant sites as part of the discussion.