Across

1. TELECINE—A machine used to convert film images into video signals.

4. LEYDEN—Commonly regarded as an early capacitor, this type of "jar" was first used in the late eighteenth century to build up and store electricity.

5. ANEMOMETER—A device that measures the direction and speed of wind.

9. AVOGADRO—The last name of the man whose “number" is 6.0221415×1023 atoms/mole?

11. CADMIUM—Atomic number 48 (Cd).

14. DENSITY—Mass per unit of volume.

15. PION—Short for pi meson.

Down

1. TQFP—Space-efficient IC packaging for PC cards (1.0 or 1.4 mm).

2. LUX—One lumen per square meter.

3. NOBEL—Swedish chemist and engineer (1833–1896) who invented the explosive called ballistite.

4. LAMARR—The screen actress (1913–2000) who is credited for coinventing the Secret Communication System, which was patented in 1942. In 1997, the Electronic Frontier Foundation awarded the actress and George Antheil for their work with spread-spectrum technology. Notable films: Algiers (1938), White Cargo (1942), and Cecil B. DeMille's Samson and Delilah (1949).

6. ENGLAND—The Great Thunderstorm (October 21, 1638) occurred in which country?

7. FAVICON—Favorites icon.

8. KALAM—Aeronautical engineer (1931–present) who became the eleventh president of India in 2002.

10. JEMISON—Doctor who in 1992 became the first African-American woman in space.

12. NTSC—Analog television system used in the U.S. and Canada.

13. HCI—The field of computer science and engineering dealing with communication between people and computers.