Materials: Vitreous visions

Strength-structure Relationships in Vitreous Infrared Materials

Investigation o( basic strength and structure relrtionships in vitreous materials revealed that a linear relationship existed between the inherent breaking strength and the microelasticity of the three glass systems which were examined, silicates, calcium aluminates, and arsenic trisulfides. Using this relationship, it is possible to explair the wide spread observed in breaking-strength data in...

Vitreous Substitutes: Old and New Materials in Vitreoretinal Surgery

Recent developments in vitreoretinal surgery have increased the need for suitable vitreous substitutes. A successful substitute should maintain all the physical and biochemical properties of the original vitreous, be easy to manipulate, and be long lasting. Substitutes can be gaseous or liquid, both of which have associated advantages and disadvantages related to their physical properties and u...

Tunnel visions

What advice would you give to someone who is considering a career in science? It is important not to shy away from addressing big questions. This will require actively seeking interdisciplinary knowledge, and developing collaborative skills. It is also important to integrate well in the scientific community, and participate in community efforts (such as reviewing manuscripts and grants). If you...

Allied Visions

The Book of Visions 2000 – Visions of the Wireless World

Mobile communication systems and the Internet are key technologies for the development of the information society, in which access to applications and services of high quality is provided in a seamless manner so that the user is not aware of the nature of the underlying network technologies. Wireless systems beyond 3G will contribute to the implementation of such a user-friendly communication p...