Much bigger and more powerful lamp. They also go through greater extremes in temperatures (one reason why I said temperature is a factor). Bigger the lamp, longer it takes for all the stuff inside the lamp itself to warm up and make light.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .