342 B. 0. Peirce — Properties of Seasoned Magnets. 



Table IV. 



Jessops Square, Self- Hardening Tool Steel. 



Dimensions of cross section 0-96 cm x 0'96 cm . Wt. per centimeter of length, 7*9 grams. 





a c-o 



ill 



S"2 



"S.2S 



.2 «d « 



«s 





aioo) 





G^ 









00 



u 



<D 



a 



am of the magneti 

 i specimen, in the c 

 ch it was purchas 

 n a unit field. 



am of magnetism 

 specimen after it 1 

 )oiled, when plai 

 a unit field. 



« c3 



lis 



ag=3 



c o u 



§§£■ 



•So a, 



Sag 

 S.g .- 



P.WiO 



atio of the indu 

 ;d by unit field, to 

 oment in the case 

 nagnet. 



egree of the tuagm 

 n the magnet 

 about 15° <J. to 100 

 ermsof the momen 

 perature. 



o • 

 BO 



.2 



'So 



0> 

 O 



si 



"So 



a 



oment per gr 

 induced in the 

 dition in whi 

 when placed l 



oment per gr 

 duced in the 

 been long 1 

 lengthwise in 



pproximate r 

 moment cause 

 permanent m 

 the seasoned i 



ean loss per d 

 moment whc 

 heated from 

 expressed in t 

 the lower tern 



©a 



OS 



33 



P 



So 





a 



§ 



<3 



< 



a 





4-0 



0-05 



0-05 



4-5 



0011 



0-00170 



0-00119 



60 



o-ot 



0-08 



7-0 



o-ou 



0-00135 



0-00092' 



8-0 



0-08 



009 



90 



o-oio 



000116 



000074 



100 



0'09 



o-io 



11-5 



0-0C9 



0-00107 



0-00066 



12-0 



o-io 



O'll 



14 



0008 



0-00098 



0-00063 



140 



0-L1 



0-12 



16-0 



0007 



000093 



0-00061 



16-0 



0-11 



0-12 



18-5 



0-006 



0-00091 



000060 



18-0 



0-12 



0-13 



2L-0 



0006 



000089 



000059 



20-0 



0-13 



0-14 



23-0 



0-006 



0-00088 



0-00058 



Table V. 



Jessops Square Self-Hardening Tool Steel. 



Dimensions of cross section, 0*64 cm x 064 cm . Wt. per centimeter of length, 3-5 grams. 





S a> i> 



S3 



O-ZSTS Sh 



cS 





c®- 



a^ 



^"oig^ 



09 





^ as a 



«4)» 



= S$o 







i'sl 



ets 



2 btS 









o 2 



a«3 



oS • 





<H 





S a>^ 



a . 



-3 cjrj c3 



O 



CO 



a 



a 

 a 



magnetic l 

 C. of the r 

 stized to sa 

 1 boiling. 



73 = 



§1-9 



degree of t 

 n the magn 

 5° C. to 100° 

 he moment 



"3d 

 .2 



*o°o 



en 



"to 



B 



XI 



"So 



a 



0> 



pproximate 

 gram at 15° 

 when magm 

 fore the fina 



Sao 



ean loss per 

 moment whe 

 irom about 1 

 in terms oft 

 temperature 



II 



So 



9J 00 





< 



<3 



3 



H 



3-0 



8-2 



6-0 



0-00160 



0-00064 



40 



11-5 



8-0 



000099 



0-00052 



60 



166 



125 



000082 



00045 



80 



23'5 



16-6 



000077 



0-00042 



10-0 



28-0 



21-0 



0-00074 



000041 



12-0 



33-5 



25-6 



000072 



0-00040 



14-0 



38-5 



31-0 



0-00071 



000040 



16-0 



44-6 



36-0 



0-00070 



0-00039 



180 



50-3 



41-0 



0-00069 



0-00039 



20-0 



55-7 



47-0 



0-00069 



0-00039 



The Jefferson Physical Laboratory, Cambridge, Mass. 



