The brightest colour emitted by the sun is:
The brightest colour emitted by the sun is:
A. Violet
B. Yellow-Green
C. Green- Blue
D. Red
A. Violet
B. Yellow-Green
C. Green- Blue
D. Red
A. Hysteria
B. Measles
C. Typhoid
D. Influenza
The number of spark plugs needed in a diesel engine is__________?
A. 2
B. 3
C. 0
D. 4
E. None of these
Nuclear radiation is emitted by those elements whose:
A. molecules are stable
B. molecules are unstable
C. nuclei are stable
D. nuclei are unstable
A. 50%
B. 55%
C. 60%
D. 80%
A. Rene Laennec
B. Steven Sasson
C. Martin Cooper
D. Dave Hyatt
The stethoscope was invented in France in 1816 by René Laennec at the Necker-Enfants Malades Hospital in Paris. It consisted of a wooden tube and was monaural. Laennec invented the stethoscope because he was not comfortable placing his ear directly onto a woman’s chest to listen to her heart.