PPT - Superconductivity - Civil Engineering (CE) PDF Download

 Page 1


SUPERCONDUCTIVITY
-BY AISHWARYA KALBANDHE 
AND SUSHMITA SHINDE
Page 2


SUPERCONDUCTIVITY
-BY AISHWARYA KALBANDHE 
AND SUSHMITA SHINDE
DISCOVERY:
• Superconductivity was discovered on 
april 8,1911 by Heike Kamerlingh
Onnes , who was studying the 
resistance of solid mercury at 
cryogenic temperatures using the 
recently-discovered liquid helium as 
a refrigerant .
• At the temperature of 4.2 K, he 
observed that the resistance abruptly 
disappeared. In subsequent decades, 
superconductivity was found in 
several other materials.
Page 3


SUPERCONDUCTIVITY
-BY AISHWARYA KALBANDHE 
AND SUSHMITA SHINDE
DISCOVERY:
• Superconductivity was discovered on 
april 8,1911 by Heike Kamerlingh
Onnes , who was studying the 
resistance of solid mercury at 
cryogenic temperatures using the 
recently-discovered liquid helium as 
a refrigerant .
• At the temperature of 4.2 K, he 
observed that the resistance abruptly 
disappeared. In subsequent decades, 
superconductivity was found in 
several other materials.
WHAT IS SUPERCONDUCTIVITY ?
?Superconductivity is a phenomenon occurring in 
certain materials generally at very low 
temperatures , characterized by exactly zero 
electrical resistance and the exclusion of the 
interior magnetic field .
?In simple words For some materials, the 
resistivity vanishes at some low temperature: they 
become superconducting ,such materials are 
called superconductors . 
Page 4


SUPERCONDUCTIVITY
-BY AISHWARYA KALBANDHE 
AND SUSHMITA SHINDE
DISCOVERY:
• Superconductivity was discovered on 
april 8,1911 by Heike Kamerlingh
Onnes , who was studying the 
resistance of solid mercury at 
cryogenic temperatures using the 
recently-discovered liquid helium as 
a refrigerant .
• At the temperature of 4.2 K, he 
observed that the resistance abruptly 
disappeared. In subsequent decades, 
superconductivity was found in 
several other materials.
WHAT IS SUPERCONDUCTIVITY ?
?Superconductivity is a phenomenon occurring in 
certain materials generally at very low 
temperatures , characterized by exactly zero 
electrical resistance and the exclusion of the 
interior magnetic field .
?In simple words For some materials, the 
resistivity vanishes at some low temperature: they 
become superconducting ,such materials are 
called superconductors . 
Critical temperature
?The temperature at which electrical resistance is 
zero is called the Critical temperature (T
c
)
?The cooling of the material can be achieved 
using liquid nitrogen or liquid helium for even 
more lower temperature.
Page 5


SUPERCONDUCTIVITY
-BY AISHWARYA KALBANDHE 
AND SUSHMITA SHINDE
DISCOVERY:
• Superconductivity was discovered on 
april 8,1911 by Heike Kamerlingh
Onnes , who was studying the 
resistance of solid mercury at 
cryogenic temperatures using the 
recently-discovered liquid helium as 
a refrigerant .
• At the temperature of 4.2 K, he 
observed that the resistance abruptly 
disappeared. In subsequent decades, 
superconductivity was found in 
several other materials.
WHAT IS SUPERCONDUCTIVITY ?
?Superconductivity is a phenomenon occurring in 
certain materials generally at very low 
temperatures , characterized by exactly zero 
electrical resistance and the exclusion of the 
interior magnetic field .
?In simple words For some materials, the 
resistivity vanishes at some low temperature: they 
become superconducting ,such materials are 
called superconductors . 
Critical temperature
?The temperature at which electrical resistance is 
zero is called the Critical temperature (T
c
)
?The cooling of the material can be achieved 
using liquid nitrogen or liquid helium for even 
more lower temperature.