Standing in the air. Sodium and water are pushed together by sound waves. SOURCE: REF. 1. Water droplets, coffee granules, fragments of polystyrene and even a toothpick are among the items that have been flying around in a Swiss laboratory lately â all of them kept in the air by sound waves.
Your status update may also show up on that friend's Timeline. When you tag someone, they'll be notified. Also, if you or a friend tags someone in your post, the post could be visible to the audience you selected plus friends of the tagged person. Learn more about what happens when you create a tag.o tag yourself or your friends in a photo: 1  Click the photo to expand it. 2  Hover over the photo and click Tag Photo at the bottom. 3  Click the person in the photo and start typing their name. 4  Choose the full name of the person you want to tag when it appears.
To protect your identity, donât use a photo, or use one that doesnât show your face. âUnPublicâ your wall. Set the audience for all previous wall posts to just friends. Turn off Tag Suggest. If youâd rather not have Facebook automatically recognize your face in photos, disable that feature in your privacy settings.ven if you delete an account (which takes Facebook about a month), some info can remain in Facebookâs computers for up to 90 days. Regularly check your exposure. Each month, check out how your page looks to others. Review individual privacy settings if necessary.