| | |||||||
|
Welcome to the YD Scuba forums. You are currently viewing our boards as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact contact support. |
| Surface Interval: Discuss Happy birthday lazlo in the General Diving Forums forums: Happy birthday ian have a great day mate and hope you get lots of shiney things today best wishes leigh... |
| | LinkBack | Thread Tools | Display Modes |
| ||||
| Have a good 'un and keep those great piccies coming Mal |
| ||||
| Happy Birthday, Lazlo ![]()
__________________ Morag YD Coven Witch One RNLI - YD Charity 2008/2009 Tin Rattler The Diving Club, Reading Shark Trust - Conservation through awareness I believe in Dragons, Fairies, Good Men and other mythical creatures Anyone can make a mistake, said the Dalek, as he climbed off the dustbin |
| ||||
| Happy burpday..... more space piccies!! |
| ||||
| Have a great Birthday, Ian I'm sure you'll have a brilliant day. Pete
__________________ In a 3-D-styleee Paddy: Is that cow dead? Max: If it isn't, it's gonna piss down! ...How dare you... Save the cheerleader.... save the world! |
| ||||
| Happy Birthday! Helen xxx
__________________ Helen Visit my home page Blonde Mafia Northern Representative I've seen the future and the future is purple |
| |||
| Have a good one matey. What did Kate get you? Fundies course? J.
__________________ What were the skies like when you were young? Pick it Pack it Fire it up, come along... |
| ||||
| Happy Birthday
__________________ Paul Qualified does not necessarily equal competent |
| ||||
| Cheers people Quote:
Quote:
Quote:
![]() Explanation: Is this what a sonic boom looks like? When an airplane travels at a speed faster than sound, density waves of sound emitted by the plane cannot precede the plane, and so accumulate in a cone behind the plane. When this shock wave passes, a listener hears all at once the sound emitted over a longer period: a sonic boom. As a plane accelerates to just break the sound barrier, however, an unusual cloud might form. The origin of this cloud is still debated. A leading theory is that a drop in air pressure at the plane described by the Prandtl-Glauert Singularity occurs so that moist air condenses there to form water droplets. Above, an F/A-18 Hornet was photographed just as it broke the sound barrier. Large meteors and the space shuttle frequently produce audible sonic booms before they are slowed below sound speed by the Earth's atmosphere. Link ![]() Explanation: Volcano Tungurahua erupted spectacularly last year. Pictured above, molten rock so hot it glows visibly pours down the sides of the 5,000-meter high Tungurahua, while a cloud of dark ash is seen being ejected toward the left. Wispy white clouds flow around the lava-lit peak, while a star-lit sky shines in the distance. The above image was captured last year as ash fell around the adventurous photographer. Located in Ecuador, Tungurahua has become active roughly every 90 years since for the last 1,300 years. Volcano Tungurahua has started erupting again this year and continues erupting at a lower level even today. Link
__________________ Ian |
| Thread Tools | |
| Display Modes | |
| |
| | ||