Light from location on which you concentrate your attention

Reference no: EM13655330

Light from a location on which you concentrate your attention fallson your fovea, which contains only cones. If you wish to observe aweak source of light, like a faint star, why should you not look directly at the source?

Reference no: EM13655330

Questions Cloud

Bacteria are propelled by motors-spin hair-like flagella : Some bacteria are propelled by motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocityhas a radius of 1.9x10-8m, and a tangential speed at therim of 2.9x10-5 m/s.

Calculate the strain-stress and youngs modulus : After a fall, a 86 kg rock climber finds himself dangling from the end of a rope that had been 15 m long and 9.2 mm in diameter but has stretched by 2.8 cm. For the rope, calculate the strain, stress, and Young's modulus

Vertically polarized light with intensity : Vertically polarized light with intensity Io is normally incident on an ideal polarizer. As the polarizer is rotated, the intensity I of light transmitted through the polarizer varies with the orientation of the polarizer (Θ), where Θ = 0 corresponds..

Meter stick balances horizontally on a knife-edge : A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 2 g coins stacked over the 11.5 cm mark, the stick is found to balance at the 44.5 cm mark. What is the mass of the meter stick?

Light from location on which you concentrate your attention : Light from a location on which you concentrate your attention fallson your fovea, which contains only cones. If you wish to observe aweak source of light, like a faint star, why should you not look directly at the source?

What type of image would this mirror produce : A mirror with a focal length of -10 cm is used to image an object15 cm away. What is the image distance and what type of imagewould this mirror produce. Draw a ray diagram as part of your answer.

What is the skateboard''s velocity relative to the sidewalk : A 42.0-kg boy, riding a 2.29-kg skateboard at a velocity of +5.82 m/s across alevel sidewalk, jumps forward to leap over a wall. Just afterleaving contact with the board, the boy's velocity relative to thesidewalk is 5.40 m/s, 9.90° above the horizon..

What is the angular speed of this bacterial motor : Some bacteria are propelled by biologicalmotors that spin hair-like flagella. A typical bacterial motorturning at a constant angular velocity has a radiusof 1.36 x10-8m, and a tangential speed at the rimof 2.21 x 10-5m/s.

What is the frequencyat which it oscillates : An electric oscillator ismade with a 0.15 micro F capacitor and a 2.0 mH inductor. The capacitor is initially charged up with a 6.0 V battery. What is the frequencyat which it oscillates?

User Account

All Pages