the test tube has air inside it.In the outer surface of the test tube is water.Due to the different media across the test tube surface the reflection of light occurs through the glass surface.Hence the test tube shines(behaves)like a mirror. Was this answer useful? Zaf. 12,624 Contributions.
Yoga fusion refers to any number of exercise routines that incorporate yoga into the regimen in some manner. This includes classes and workouts that directly use yoga postures in their sequencing to more abstract concepts, such as Yoga and Vino, which might involve taking a yoga class and then sampling wine afterward.
Lumbar Spinal Fusion (Arthrodesis). Guide. Lumbar spinal fusion is surgery to join, or fuse, two or more vertebrae in the low back. Spinal fusion is major surgery, usually lasting several hours. There are different methods of spinal fusion. 1  Bone is taken from the pelvic bone or from a bone bank. 2  The bone is used to make a bridge between vertebrae that are next to each other. 3  This bone graft helps new bone grow. 4  Metal implants are usually used to hold the vertebrae together until new bone grows between them.