Can you crack the puzzle (P.S. neglect commas,hyphens,apostrophes,etc)

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Across
  1. 3. The specific heat of a gas in isothermal process is?
  2. 5. The person called an anagram of ‘Ten elite brains’ !!!
  3. 10. In the longitudinal waves the direction of vibration in medium of particle is ____ to propagation/with time.
  4. 12. Absorptive power of perfectly black body is?
  5. 13. Spectrum of a perfectly black body is?
  6. 15. The original version of the DSLR camera you use today was invented by?
Down
  1. 1. The value of ____ constant is 2.8977685 ×10−3 m•K .
  2. 2. Cause for The red glow in the neon tube of an advertising sign is?
  3. 4. The modulus of elasticity is dimensionally equivalent to?
  4. 6. I am the person who said - “ The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...' “ I am?
  5. 7. Reason for Rain drops being spherical in shape because is?
  6. 8. SI unit measure for magnetic field strength is?
  7. 9. A particle is moving in a circle with a uniform speed performs ____ motion.
  8. 11. Reason for the Heat energy received by the earth from the sun is?
  9. 14. Torque acting upon a system is zero then the quantity which remains constant is?