The width of the central maximum is defined as the distance between the two minima closest to the center of the diffraction pattern. Since these are symmetric about the center of the pattern, you need to find only the distance to one of the minima, and then the width of the central maximum will be twice that distance. Find the angle θ between the center of the diffraction pattern and the first minimum. The equations for diffraction, which you have seen applied to light, are valid for any wave, including electron waves. Recall that the angle to a diffraction minimum for single-slit diffraction is given by the equation sin(θ)=mλ/a, where a is the width of the slit and m is an integer. Recall that m=±1 for the first minima on either side of the central maximum. Do not make any approximations at this stage. Express your answer in terms of h, a, me, e, and V.

The value of the angle is .

Explanation:

Given:

The condition for diffraction minima is

where, is the slit-width, is the angle of incidence, is the order number and is the wavelength of the light.

The wavelength of an electron traveling through a medium is governed by de Broglie's hypothesis.

According to de Broglie's hypothesis

Here, is Planck's constant, is the mass of the electron and is the velocity of the electron.

For first minimum .

From equation (1), we have

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19